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Metra 70-5521 Receiver Wiring Harness

Connect a new car stereo in select 2003-up Ford, Lincoln, Mazda, and Mercury vehicles

149 Reviews | 4 questions - 5 answers

Item #: 120705521

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Metra 70-5521 Receiver Wiring Harness

Overview

This vehicle-specific wiring harness makes connections between your new car stereo and your car's electrical system.

Metra 70-5521 Receiver Wiring Harness

Installation Note: This harness uses your factory amplifier; your new stereo must have one pair of preamp outputs to connect this harness.

This vehicle-specific wiring harness makes connections between your new car stereo and your car's electrical system.

First, attach the color-coded wires on your Crutchfield-supplied harness to the wires from your new stereo. If you're not using a soldering iron, we recommend that you purchase some wire connectors to secure the connections. Check out our handy article on three ways to connect the wiring harness here.

Now, once this harness is connected to your new stereo, you'll be able to plug right into your car's factory radio connector. This harness makes installing your new stereo easier, and allows you to put the factory radio back when you sell your vehicle or return it at the end of the lease. A detailed instruction sheet comes with the harness. Warranty: 60 days.

Please read this important note: This harness may not contain provisions for every wire needed to complete your installation, and it will not accommodate special navigation, video, or factory steering wheel control connections. You will need a special adapter if you want your factory steering wheel audio controls to work with your new stereo.

Note: Most vehicles will require additional installation parts — please identify your vehicle if you haven’t done so. You can also call an Advisor for more information.

The detailed instructions and the wiring harness made the installation very easy. You would need to be a trained tech to attempt the install without them.

Dan S, Louisville, KY

What's in the Box:

  • 7" Receiver wiring harness
  • 13" RCA harness
Connections
  • 12V constant power
  • 12V switched power
  • chassis ground
  • dimmer
  • left front speaker +/-
  • right front speaker +/-
  • left rear speaker +/-
  • right rear speaker +/-
  • amp turn on
  • RCA cables for the signal to the woofers
Reviews

Metra 70-5521 Receiver Wiring Harness Reviews

Average Customer Review:

149 Reviews

Must have

Written by: Dan S from Louisville, KY on July 21, 2016

2007 Ford Mustang
Crutchfield Customer Review (What's this?)

The detailed instructions and the wiring harness made the installation very easy. You would need to be a trained tech to attempt the install without them.

Pros: Made the install very easy.

Cons: None

quick

Written by: Kelly from Rock Springs, WY on July 19, 2016

2006 Ford Mustang
Crutchfield Customer Review (What's this?)

Quick and painless connections. Made changing the unit so much easier.

Pros: Quick, painless, directions were easy to follow

Cons: None

Metra 70-5521 Receiver Wiring Harness

Written by: Brian from Ft Worth, TX on July 3, 2016

2008 Ford F-150
Crutchfield Customer Review (What's this?)

The wiring harness made integration with the factory harness a breeze. This harness must be connected properly to the aftermarket unit you purchase. The wiring is pretty straightforward, as long as you carefully examine the diagrams provided for the harness and the proper diagram used in the aftermarket unit. I used red crimp butt splice connectors for my installation. The wire gauge of the harness was thicker than he wire gauge used on the aftermarket unit.

Pros: -clear instructions for the harness

Cons: -would be nice if the harness could be better matched to the aftermarket unit. There was some risk of wiring the harness incorrectly.

Metra 70-5521 Receiver Wiring Harness

Written by: Anonymous from Maine on June 20, 2016

2006 Ford Mustang
Crutchfield Customer Review (What's this?)

Worked great, very straight forward

Pros: Wires are prestripped.

Cons:

Makes it SO EASY

Written by: James from Katy, TX on June 13, 2016

2005 Ford Mustang
Crutchfield Customer Review (What's this?)

So much easier than trying to figure out factory wiring harness.

Pros:

Cons:

Great directions

Written by: Kyle from Washington on May 24, 2016

2005 Ford F-150
Crutchfield Customer Review (What's this?)

Only complaints, no wires for the steering wheel controls so you have to tap in or cut on your factory harness and no Vehicle Speed sensor wire either.

Pros: Great instructions Easy to install

Cons: No steering wheel control wires No vehicle speed sensor wire

Metra 70-5521 Receiver Wiring Harness

Written by: Nigel B from Everett, WA on May 24, 2016

2006 Ford F-150
Crutchfield Customer Review (What's this?)

Wires right up and had zero issues, despite having extremely limited electrical experience. Instructions were very clear and easy to understand!

Pros:

Cons:

Great product!!!!!!!!!!

Written by: Anonymous from Mooresville, NC on April 25, 2016

2004 Ford Mustang
Crutchfield Customer Review (What's this?)

Received this item quickly and it worked exactly as advertised. Had to cal servic for help install as I am red/green color blind and they were great. love Crutchfield.

Pros:

Cons:

Excellent service

Written by: Bob D from lubbock, TX on March 29, 2016

2003 Ford Explorer
Crutchfield Customer Review (What's this?)

I actually told them the incorrect year of my Explorer. So it was the incorrect harness. I called and they sent me the correct one. Great service for sure!

Pros: Good instructions sent to me via email. They were specific to my Ford Explorer.

Cons: None

Good Fit

Written by: Tim from Brewster, NY on March 20, 2016

2003 Lincoln Town Car
Crutchfield Customer Review (What's this?)

Good fit and finish for my 2003 lincoln town car with new double din Alpine radio.

Pros: Good fit.

Cons: None

Metra 70-5521 Receiver Wiring Harness

Written by: Steve from TN on March 14, 2016

Crutchfield Customer Review (What's this?)

I have a 2004 Ford Sport Trac with the premium sound 6-disk cd changer and this was the correct connector. I was glad to find a connector that worked with my factor sub/amp so I didn't loose them. Crutchfield is the BEST!!

Pros: easy install

Cons: none

Metra 70-5521 Receiver Wiring Harness

Written by: Jeremy from westport, MA on March 13, 2016

2005 Ford Explorer
Crutchfield Customer Review (What's this?)

Worked great, made install very easy

Pros: Easy to install

Cons: None

Worked Like a charm

Written by: BDB from Lancaster, PA on March 6, 2016

Crutchfield Customer Review (What's this?)

This harness fit perfectly on a 2007 Ford Escape

Pros: Worked as described

Cons: none

Metro 70-5521

Written by: james from York,sc on February 11, 2016

2007 Ford Mustang
Crutchfield Customer Review (What's this?)

Perfect fit for my 2007 mustang. Instructions were included for easy pre wiring in the comfort of my home. Then simply plug into head unit and car

Pros: Very simple wiring instructions and plug and play

Cons: None

Works like needed for the shaker500

Written by: Jake from state college, PA on February 8, 2016

2005 Ford Mustang
Crutchfield Customer Review (What's this?)

It works as needed. I took my car to have this and the head unit installed professionally. The guy said it was easy to do, and I'm satisfied with the result, as the stock shaker500 amps/subs still work.

Pros: Crutchfield included it free which is awesome. It works well.

Cons: None. It was free

Perfect fit for 06 Expedition

Written by: Tim from Great Falls, MT on January 26, 2016

2006 Ford Expedition
Crutchfield Customer Review (What's this?)

Hooked right up with no issues....would recommend for making an install easy.

Pros: PRice....ease

Cons: none

Worked Great

Written by: Jonny211 from parker, CO on January 19, 2016

2004 Lincoln Aviator
Crutchfield Customer Review (What's this?)

Product worked great with very little time spent on the install. All I had to do was match the colored wires from the new stereo system to the harness which matched perfect. Would recommend this product to anyone interested.

Pros: perfect

Cons: N/A

Wire hardness

Written by: Ricky from Kansas on January 17, 2016

2005 Ford Mustang
Crutchfield Customer Review (What's this?)

Just what Ineeded

Pros:

Cons:

Metra 70-5521 Receiver Wiring Harness

Written by: Anonymous from New Jersey on January 11, 2016

2005 Ford Mustang
Crutchfield Customer Review (What's this?)

perfect

Pros:

Cons:

install

Written by: Randy from Colorado on January 8, 2016

Crutchfield Customer Review (What's this?)

Customer service was fantastic love Crutchfield sent out replacement part same day Thankyouagain

Pros: Awesome service

Cons: none

Works Great!

Written by: Corey from Ohio on December 29, 2015

2004 Ford Mustang
Crutchfield Customer Review (What's this?)

Worked great when installing a new unit in an 04 mustang with the Mach system. Allowed me to keep the factory speakers and amps.

Pros: Worked great with my application and keeps cost down by keeping factory speakers and amps functionality.

Cons: None.

Receiver Wiring Harness

Written by: jdp from North Carolina on December 18, 2015

2007 Ford Mustang
Crutchfield Customer Review (What's this?)

Perfect match

Pros: Easy to install and customer service was the best I've ever dealt with

Cons:

Super Easy Install

Written by: NateB from Tennessee on December 16, 2015

2004 Ford Mustang
Crutchfield Customer Review (What's this?)

Wires from receiver crimp to harness and the harness plugs directly into the factory plug. Nothing much else to say except install time is almost nothing with this part. Excellent!

Pros: Super easy install, clear instuctions

Cons: None

Simple

Written by: RW from California on December 13, 2015

2005 Ford Escape
Crutchfield Customer Review (What's this?)

Very simple. Makes for a clean install.

Pros: Colors matched completely.

Cons: None found

Simple!

Written by: Aaron from Washington on December 3, 2015

2006 Ford F-150
Crutchfield Customer Review (What's this?)

About as plug and play as you can get!

Pros:

Cons:

cables

Written by: AlX from Texas on October 15, 2015

2006 Ford Mustang
Crutchfield Customer Review (What's this?)

Easy to install

Pros: Easy to install, clear instructions, color coded cables.

Cons: none

Metra 70-5521 Receiver Wiring Harness

Written by: angelo v from New York on October 2, 2015

2005 Ford Explorer
Crutchfield Customer Review (What's this?)

excellent product makes installing a breeze

Pros: makes the install a breeze

Cons: none

Couldn't Be Easier

Written by: Ralph M from New Jersey on August 24, 2015

Crutchfield Customer Review (What's this?)

This made the radio upgrade a snap. Great setup

Pros: Easy install. Great directions

Cons: None

Ford Escape - every wire color matched

Written by: KO from California on August 21, 2015

2007 Ford Escape
Crutchfield Customer Review (What's this?)

This harness was a perfect fit for the Ford Escape and the Pioneer DEH X6700BT. Every single wire color was a match which made the wiring work a snap. Cut my installation time down significantly. I would not do an install on a Ford Escape without this harness.

Pros: All the colors matched the colors on the aftermarket Pioneer unit and the wires were pre-stripped. Installation could not have been easier.

Cons:

Radio wire harness

Written by: Dave from New York on July 13, 2015

Crutchfield Customer Review (What's this?)

Between the color coded instructions on harness bag and the manual with radio, this was very understandable for the average person. I was able to hook this harness up to the radio harness with ease. This harness hooked up with the original connectors on car.

Pros:

Cons:

Metra 70-5521 Wiring Harness

Written by: Milo42GPW from Stuart, Florida on June 16, 2015

Crutchfield Customer Review (What's this?)

Easy to use and simple to connect to the units wiring harness

Pros: Instructions clear and easy to use. Wiring color code matched wire for wire.

Cons: none

2004 Ford F150 Lariat

Written by: Brock from Dallas Texas on May 27, 2015

2004 Ford F-150
Crutchfield Customer Review (What's this?)

What can I say, it was a perfect fit with no problems.

Pros: Perfect fit.

Cons: None

Super easy instal 2007 Mustang GT

Written by: B Hess from GC il on May 23, 2015

2007 Ford Mustang
Crutchfield Customer Review (What's this?)

Makes install nice and easy no cutting of the stock harnes at all.

Pros:

Cons:

Metra 70-5521 Receiver Wiring Harness

Written by: Anonymous from Washington on May 1, 2015

2006 Ford Mustang
Crutchfield Customer Review (What's this?)

Easy to install! simple directions!

Pros:

Cons:

Good wire set

Written by: Godslawman00 from Charleston, SC on April 9, 2015

2005 Ford Expedition
Crutchfield Customer Review (What's this?)

The instructions from Crutchfield and the package were clear. The wire harness was the correct one for my vehicle and made the wiring of the new stereo a breeze.

Pros: All wires needed were present. The wires are all pre-stripped. All you have to do is pull the pre-cut sleeve off.

Cons: Did not wire itself

perfect harness

Written by: Anonymous from kissemme fl on March 29, 2015

2005 Ford Explorer
Crutchfield Customer Review (What's this?)

Perfect harness for my application!

Pros: Makes my installation a breeze

Cons: None

Woked Perfect

Written by: BD from Rhode Island on March 19, 2015

2006 Ford Escape
Crutchfield Customer Review (What's this?)

The kit worked perfectly. I had my radio installed in 20 minutes. Thanks Crutchfield!!

Pros: Wires matched perfect

Cons: None

not sure

Written by: Austin from cedar falls ia on March 17, 2015

2006 Ford Mustang
Crutchfield Customer Review (What's this?)

Dont be confused with "remote control" wire and "remote" wire. They're both blue. Also I'm not sure what to do with the harness with the RCAs..

Pros: Colors matched up well for me. Wires come stripped.

Cons: Not 100% clear instructions

Simple and Quick

Written by: asphltcwby from Rupert, Ga on March 4, 2015

2005 Ford Mustang
Crutchfield Customer Review (What's this?)

Product was very easy to use and made for a quick, painless install...

Pros: Simplicity

Cons: Nothing to drop the amp remote from 12v to 5v as to eliminate the "pop" when power is turned on...

Easy wiring

Written by: Bill C from South Carolina on February 20, 2015

2005 Ford Escape
Crutchfield Customer Review (What's this?)

The wiring for this receiver would have been confusing for me without the kit. Crutchfield includes the right parts to make installation easy.

Pros: Easy connection. No splicing into the vehicle wiring

Cons:

theitems I received fit perfectly and the radio sounds really good

Written by: Chuck from sabattus me 04280 on February 5, 2015

Crutchfield Customer Review (What's this?)

It is great

Pros:

Cons:

Metra 70-5521

Written by: Bob S from Las Vegas Smith on January 27, 2015

2004 Ford Escape
Crutchfield Customer Review (What's this?)

Everything was going great until I got to the small wiring harness for Mach sub system. There was no detail on the package on how to wire. After contacting Crutchfield support Rudy helped me out with both Blu/Wht wires going to Blu/Wht Amp turn on wire of after market head end unit and plugging the white RCA into the Sub Out of the same unit.

Pros: Easy color matching

Cons: Missing wiring notes for small Mach sub wiring harness

Metra 70-5521 Receiver Wiring Harness

Written by: Anonymous from Grand Junction, MI on January 6, 2015

2005 Ford F-150
Crutchfield Customer Review (What's this?)

Love ordering from Crutchfield they make installation of car audio very easy by giving you everything that you need

Pros:

Cons:

Metra 70-5521 Receiver Wiring Harness

Written by: Samone from Pataskala, Ohio on January 6, 2015

2004 Ford Explorer
Crutchfield Customer Review (What's this?)

For the most part this product works fine.

Pros: Easy to hook up. I required an additional product to hook this up that got a little tricky but the Crutchfield tech support guy made it easy.

Cons: I bought a JVC receiver along with this product that is supposed to be in tune with the headlights for brightness but it doesn't work... as a matter of fact it doesn't light up at all when radio is off. The orange orange/white wire is suppose to control the lighting and dimmer which is hooked up but doesn't work.

Wire for wire connections made easy

Written by: Nick F. from Michigan on December 16, 2014

2005 Ford F-150
Crutchfield Customer Review (What's this?)

I used this wire harness to hook up my 2005 F150 to the Kenwood DDX371. Pretty much color for color wiring. If unsure the instructions provided online are pretty clear.

Pros: Easy wiring

Cons: none

Metra 70-5521 Receiver Wiring Harness

Written by: Eric from Leominster MA on November 30, 2014

2005 Ford F-150
Crutchfield Customer Review (What's this?)

Worked great, easy to use install.

Pros: Cheap, easy to install

Cons: Not much for instructions but it was self explanatory

works

Written by: Anonymous from Hixson TN on November 24, 2014

2005 Ford Escape
Crutchfield Customer Review (What's this?)

Works perfectly!

Pros: Easy to Install

Cons: None

Wiring pigtail

Written by: Dave from Belleville,Il on November 9, 2014

2005 Ford Mustang
Crutchfield Customer Review (What's this?)

Good product worked great

Pros: Easy to install

Cons: No cons

Works

Written by: MikeB from Indiana on November 3, 2014

2007 Ford Mustang
Crutchfield Customer Review (What's this?)

No issues at all, works with Shaker 500 and 1000

Pros: free

Cons: none

Great!

Written by: Anonymous from Atlantic City, NJ on October 29, 2014

2006 Ford F-150
Crutchfield Customer Review (What's this?)

Match up the colors and plug it in! It's that easy!

Pros:

Cons:

good product

Written by: Anonymous from Moline IL on October 27, 2014

2006 Ford F-150
Crutchfield Customer Review (What's this?)

Matched perfectly

Pros:

Cons:

Worked for my 207 Mustang with Shaker 500

Written by: Adrian from Mission Viejo, CA on October 5, 2014

2007 Ford Mustang
Crutchfield Customer Review (What's this?)

This worked in my 2007 Mustang with Shaker 500. It was a bit difficult to get all the connections right. I would definitely recommend getting the crimp caps from Crutchfield because I couldn't find them anywhere; not even radio shack. Although I ended up using 18-22 gauge butt caps. You'll want a good crimp tool as well.

Pros: Worked for my stereo

Cons: The harness had an extra wire that wasn't on the instructions. I called and customer service/ tech support was very helpful. I ended up taping the extra wire off. Also if you get the voltage converter it's a bit weird to set up. The instructions are accurate and I got it right but had to call customer service again because it just didn't seem right but it was.

It works like it's supposed to!

Written by: Jason K. from Louisville, Kentucky on October 2, 2014

2007 Ford Mustang
Crutchfield Customer Review (What's this?)

It works like it's supposed to! What else can I say? 5 stars!

Pros: It works like it's supposed to!

Cons: None

Metra 70-5521 Receiver Wiring Harness

Written by: Tom C. from grove, ok on September 23, 2014

Crutchfield Customer Review (What's this?)

It was easy to use and worked perfectly for connecting my Ford F150 to a new Kenwood radio

Pros: easy to install

Cons: The wires needed to connect the steering wheel controls did not pass though the connector and had to be connected to the truck harness which was kind of a pain.

Wiring harness

Written by: Charlie from Kentucky on September 20, 2014

2005 Mercury Mariner
Crutchfield Customer Review (What's this?)

Good

Pros: Plug in and wire up

Cons: None

Ford Escape Harness

Written by: Justin from Oklahoma City, OK on August 30, 2014

Crutchfield Customer Review (What's this?)

Excellent product. Excellent quality. Very simple directions. Made the install much easier and without cutting into the vehicles existing harness

Pros: Easy to install

Cons: None.

Review of Metra 70-5521 Wiring harness

Written by: tunedstang from oklhoma city,oklaboma on August 27, 2014

2006 Ford Mustang
Crutchfield Customer Review (What's this?)

Excellent product. Excellent quality. Very simple directions. Cuts the time in half on install. Professional looking results. Definately a must have.

Pros: Time saver. Great quality product. Easy to install.

Cons: None

06 Mustang GT Shaker500

Written by: Dwayne from Swanton, MD on August 11, 2014

2006 Ford Mustang
Crutchfield Customer Review (What's this?)

I didn't have have to splice anything into the stock amps so that was awesome. I was a little confused because I had a 3rd connector that didn't seem to plug in to anything that originally plugged into my stock stereo, but the Crutchfield rep verified that I didn't need to plug it into anything. Seems to work okay.

Pros: Easy to install.

Cons: Crutchfield claims this and other items are "free" with order, but they're really not free. They inflate the price if the stereos to cover the cost of these "free" items and their "free" shipping. Nothing is free. You're still paying for this.

Metra 70-5521 Receiver Wiring Harness

Written by: Dan from Becker, MN on July 28, 2014

2007 Ford F-150
Crutchfield Customer Review (What's this?)

Harness worked great, just don't understand why all the pins needed were not installed in the connector. I had to splice into 2 other wires to in the factory harness for the steering wheel controls that I felt should have been pinned in the connector.

Pros: Fit up perfect

Cons: Not all terminal points have pins inserted for costumer use.

Good but could be bertter

Written by: JeffH from WV on July 16, 2014

2007 Ford F-150
Crutchfield Customer Review (What's this?)

Wiring harness is good but could include a couple of extra wires for the reverse and parking brake connections. I know that at least on my 2007 Ford that the connector that this plugs into has the reverse wire already supplied.

Pros: Made well Good instructions

Cons: No reverse or parking brake connections.

Perfect

Written by: lloyd from Scranton, PA on July 12, 2014

2006 Ford Mustang
Crutchfield Customer Review (What's this?)

What can you say? Works prefect and makes for a clean damage free installation.

Pros: Everything

Cons: None

Metra 70-5521 Receiver Wire Harness

Written by: JT from Saint Cloud, FL on June 29, 2014

2006 Ford Mustang
Crutchfield Customer Review (What's this?)

Great harness, makes install a breeze.

Pros: Makes wiring so easy a cave man can do it!!

Cons: None

so simple

Written by: townie28 from east providence, ri on June 27, 2014

2005 Ford Explorer
Crutchfield Customer Review (What's this?)

The wiring actually matched my Kenwood deck's wiring exactly, so this was easy as pie!

Pros: Matched my Kenwood deck's color coded wiring

Cons: none

07 Mustang with Shaker 500

Written by: Greg from TX on June 24, 2014

2007 Ford Mustang
Crutchfield Customer Review (What's this?)

It was fun to match the cables with the receiver.

Pros: The wires are pre-stripped.

Cons:

rw

Written by: r from Nebraska on June 17, 2014

2005 Ford Mustang
Crutchfield Customer Review (What's this?)

Followed instructions, No issues

Pros: Easy to install

Cons: None

Metra 70-5521 Receiver Wiring Harness

Written by: Jbizzle from Nashville, TN on June 16, 2014

2005 Ford Mustang
Crutchfield Customer Review (What's this?)

Make installing radio quick and easy!

Pros:

Cons:

Harness

Written by: Rex from Weaverville, NC on June 8, 2014

2007 Ford Mustang
Crutchfield Customer Review (What's this?)

Matched perfectly with factory harness.

Pros: Easy to hook up.

Cons: None

Metra 70-5521 Receiver Wiring Harness

Written by: gg from macon,ga on May 19, 2014

2005 Ford F-150
Crutchfield Customer Review (What's this?)

did not need at present will use on upgrade

Pros: none

Cons: none

Metra 70-5521 Receiver Wire Harness

Written by: Anonymous from ny on May 19, 2014

2005 Ford F-150
Crutchfield Customer Review (What's this?)

a must have.

Pros: no problems.

Cons: none

Great

Written by: Ya from Burkburnett, Tx on April 25, 2014

2007 Ford Mustang
Crutchfield Customer Review (What's this?)

It works

Pros: Did everything it is supposed to

Cons: None

Thank you crutchfield for the easy install

Written by: David from Ohio on April 13, 2014

2007 Ford Mustang
Crutchfield Customer Review (What's this?)

When I first unpacked everything. It took me a minute as I am a first timer to this. Then I saw everything is color coordinated and began soldering away. Piece of cake. Plugged into factory harness. Could not have gone smoother. Thank you crutchfield for making this do simple.

Pros: What's not to like they give you this free with purchase! Even a stereo novice like me figured this out

Cons: None

Perfect

Written by: madvad from Estes Park, CO on April 2, 2014

Crutchfield Customer Review (What's this?)

Works perfect. However, be aware that older fords, mercurys and lincolns have multiple possibilities for different harnesses.

Pros: perfect

Cons: This was my second try. The first harness sent didn't fit

Wire Harness

Written by: JB from GA on March 24, 2014

2006 Ford Mustang
Crutchfield Customer Review (What's this?)

Easy installatiion.

Pros:

Cons:

Perfect fit

Written by: Morton M from Wichita Falls, TX on March 22, 2014

2005 Lincoln Aviator
Crutchfield Customer Review (What's this?)

The harness fit perfectly with my Aviator. No problems with the harness or its installation.

Pros: perfect match, perfect fit

Cons: none

Ford Harness

Written by: Writer232 from Yorba Linda, CA on February 18, 2014

2004 Ford Explorer
Crutchfield Customer Review (What's this?)

Connects great in between the stereo and the factory wiring harness. I was able to splice everything in to this harness so I didn't have to cut in to the factory harness at all.

Pros: Easy to install

Cons: None

Metra 70-5521 Receiver Wiring Harness

Written by: J from Rockledge Florida on February 13, 2014

2006 Ford F-150
Crutchfield Customer Review (What's this?)

It was easy to install and use. After I called and got assistance from Crutchfield on the wiring

Pros: Easy to use once you know the two blue wires go to the remote app turn on

Cons: The directions could be a little bit more clear on wiring

07 Mustang wire harness adapter

Written by: John C from Port Richey, FL on February 12, 2014

2007 Ford Mustang
Crutchfield Customer Review (What's this?)

Easy installation of new head unit using this in my 07 Mustang with the shaker 500 system. Was able to install the head unit and maintain the factory amps and subs.

Pros: It works

Cons: None

wiring harness 05 Mustang to Kenwood DDX470

Written by: craig from Sharpsburg Ga on January 26, 2014

2005 Ford Mustang
Crutchfield Customer Review (What's this?)

Excellent

Pros: easy to follow instructions.Connections were spot on.

Cons: None.

Ford harness

Written by: Fastmc from Genoa IL on January 13, 2014

2007 Ford Escape Hybrid
Crutchfield Customer Review (What's this?)

This is intended for premium sound systems. However, it will not fit an Escape with premium sound and Nav. Even the sub wire is different.

Pros: Nice quality

Cons: Application- get a look at your plug before you order. Compare pics, it's the only sure way

harness

Written by: hott1 from Wrightsville, PA on January 13, 2014

2006 Ford Escape
Crutchfield Customer Review (What's this?)

Perfect!

Pros: Colors matched perfectly

Cons: None

Easy to install

Written by: Anonymous from Martins Ferry, OH on November 24, 2013

Crutchfield Customer Review (What's this?)

Good instructions easy to install

Pros: It's all good

Cons: None

No problems

Written by: Don L from Wilmington, DE on November 20, 2013

2005 Ford Explorer
Crutchfield Customer Review (What's this?)

Clear directions made it easy to match up the wires from the radio to those of the harness. I chose to solder and cover with heat shrink tubing. I was glad to have shortened the wires prior to assembly because there would not have been enough space in my Ford Explorer to have wires of the original length.

Pros: Easy directions. Fit the car's harness perfectly.

Cons: None.

Cables Cables Cables

Written by: Don from Fallon on November 13, 2013

Crutchfield Customer Review (What's this?)

Vehicle is a 2004 and the harness is a 2005-Go Figure! Once I got the right parts it was simple.

Pros: The right stuff

Cons: None

Free and Easy

Written by: Wes from Los Angeles, CA on November 9, 2013

2006 Ford Mustang
Crutchfield Customer Review (What's this?)

it was free, it was easy, and everything works

Pros:

Cons:

It Works!

Written by: Jim Y from Virginia Beach,VA on October 3, 2013

2005 Ford F-150
Crutchfield Customer Review (What's this?)

It works

Pros: Easy to follow instructions. And easy install.

Cons: none

Works Great

Written by: Skunker from East Lansing, MI on September 15, 2013

Crutchfield Customer Review (What's this?)

Easy to follow wiring

Pros: Wiring diagram was large enough to to read easily.

Cons: None

As Advertised

Written by: wrkalot from Florida on September 15, 2013

2003 Lincoln Town Car
Crutchfield Customer Review (What's this?)

Was able to wire everything up before the install. Everything works perfectly.

Pros:

Cons:

Great

Written by: lupe from Victoria, tx on September 3, 2013

2005 Ford Mustang
Crutchfield Customer Review (What's this?)

Great

Pros: Easy

Cons: None

Great

Written by: M from Rochester on August 16, 2013

2004 Ford Mustang
Crutchfield Customer Review (What's this?)

Great product. Perfect fit. No problems

Pros: Shipping. Price. Easy

Cons: None

Nice Harness, but.....

Written by: 05LSV8 from MN on August 11, 2013

2005 Lincoln LS
Crutchfield Customer Review (What's this?)

Simple, Color coded wires for simple color to color connections, my only complaint is that i wish they would include a few extra prongs for those of us that want to integrate steering wheel controls to the harness without having to cut into our factory harness

Pros: easy wiring

Cons: Needs to include extra prongs for mayching wires that might not go to the radio, but other controls

works well but needed tech support

Written by: link1328 from Pittsburgh PA on July 28, 2013

2006 Ford Escape
Crutchfield Customer Review (What's this?)

wire harness works well, was a little frustrating at first but after 1 call to tech support instructions made more sense.

Pros:

Cons:

receiver wire harness

Written by: jh from pleasant view on July 24, 2013

2004 Ford Mustang
Crutchfield Customer Review (What's this?)

works great

Pros:

Cons:

04 Ford Explorer Perfect Fit

Written by: Tony R from Bangor PA on July 19, 2013

Crutchfield Customer Review (What's this?)

Perfect match to the factory harness in my 04 Explorer with factory sub.

Pros:

Cons: None

Receiver Wire Harness

Written by: Parrish from Birmingham, AL on July 15, 2013

2004 Ford Expedition
Crutchfield Customer Review (What's this?)

This was the correct harness for my '04 expedition. Soldered everything up at my kitchen table and made the installation plug and play in the vehicle.

Pros: color coded wires

Cons: none

Metra 70-5521 Receiver Wiring Harness

Written by: geon from sc on May 24, 2013

2004 Ford Escape
Crutchfield Customer Review (What's this?)

Eliminated any questions of how to connect the wires....especially for the factory subwoofer

Pros: simple and could do all the wiring at my kitchen table

Cons:

Metra 70-5521 Receiver Wiring Harness

Written by: Roy from MD on May 18, 2013

Crutchfield Customer Review (What's this?)

The radio works fine, just wish it did not have so much wire on it to trim off.

Pros:

Cons:

Perfect

Written by: Tom from Frederick, MD on May 16, 2013

2006 Ford Mustang
Crutchfield Customer Review (What's this?)

2006 Mustang GT with Shaker 500. Worked perfect. No issues at all.

Pros:

Cons:

Metra 70-5521 Receiver Wiring Harness

Written by: Anonymous from pa on May 8, 2013

2005 Ford Mustang
Crutchfield Customer Review (What's this?)

great Wire Harness

Pros:

Cons:

Wiring harness

Written by: Anonymous from Lowell,IN on May 6, 2013

2006 Ford F-150
Crutchfield Customer Review (What's this?)

Perfect fit

Pros:

Cons:

Easy wiring!

Written by: Dave, TN from Medina, TN on May 5, 2013

2004 Ford Expedition
Crutchfield Customer Review (What's this?)

Easy to follow wiring!

Pros:

Cons:

Perfect connection

Written by: WRS from Casper, WY on May 4, 2013

2006 Ford Expedition
Crutchfield Customer Review (What's this?)

Easy to install with color coded wires

Pros: Easy to install with color coded wires

Cons: None

Great harness

Written by: John W from Massapequa Park, NY on May 4, 2013

2005 Ford Mustang
Crutchfield Customer Review (What's this?)

This harness enabled me to make all of my speaker and other wiring connections on my dining room table before disassembling my dashboard. Once the old unit was removed this harness just plugged right in and worked almost perfectly. I say almost because the only stock feature that does not work for some reason is the dimmer control. But since I installed a DVD player with a full glass touch screen I don't really see this as a problem for me.

Pros: makes wiring the new head unit a simple task as long as you stay neat and organized while making connections.

Cons: No dimmer control.

Metra 70-5521 Receiver Wiring Harness

Written by: Anonymous from Llano, TX on April 24, 2013

2004 Ford F-150
Crutchfield Customer Review (What's this?)

Easy to attach. Color code is right on the money for a 2004 Ford F-150 FX4 w/factory sub.

Pros:

Cons:

Wire Harness

Written by: Rick from Pottsville PA on April 24, 2013

2004 Ford Explorer
Crutchfield Customer Review (What's this?)

Works great

Pros: Easy install

Cons: None

Metra 70-5521 Receiver Wiring Harness

Written by: Anonymous from St Charles IL on April 22, 2013

2006 Ford Focus ZX5
Crutchfield Customer Review (What's this?)

Good product!

Pros:

Cons:

Wire it, Plug it in, Good to go. Easy!

Written by: NVSkier from Elko, NV on March 27, 2013

Crutchfield Customer Review (What's this?)

The wire harness that was included from Crutchfield was great. It was easy to follow with the color coordinated wires. They even sent me the extra cable for the factory sub! Make sure to double check all connections before sliding the unit back in the dash. Otherwise, easy.

Pros: Great fit and compatibility with the factory harness.

Cons: Limited instructions, especially for the sub. If you have never put in a stereo, get some help.

Plug-and-Play is the Word, 2005 Mustang Convert Shaker 500

Written by: RandyD from Arlington, TX on March 26, 2013

2005 Ford Mustang
Crutchfield Customer Review (What's this?)

Make sure you have plenty of wire-to-wire connectors, a good crimping tool, and you're good to go. To connect the wire harnesses to the radio, color goes to color. It's that simple. Then, it's plug into the empty car harness. If I remember correctly you'll end up with an empty plug on the car harness that accommodates things such as speed sensitive sound increase/reduce and dim control to the HU display. You'll probably lose both of these functions with a new HU.

Pros: Easy to connect, and, if you have a question, Crutchfield is just a quick phone call away.

Cons: Note sure if it's even possible, but the new harness does not support speed sensitive sound or display dim to the new HU.

Makes installation a breeze.

Written by: Scott S from Riverton, WY on February 26, 2013

2007 Ford Mustang
Crutchfield Customer Review (What's this?)

As usual, Crutchfield provides everything you need for a seamless installation. This harness worked perfectly in my 2007 Mustang and the instructions were accurate and easy to understand.

Pros: Allows for a clean, professional installation.

Cons: None that I can think of.

easy install

Written by: forrestd from st joseph mo on February 17, 2013

Crutchfield Customer Review (What's this?)

great product, easy instructions, had all connections neededfor my 04 expedition audiophile system, thanks crutchfield!

Pros: easy to understand instructions

Cons: n/a

Ford Explorer wiring harness

Written by: Buzz from Viera Florida on February 10, 2013

2004 Ford Explorer
Crutchfield Customer Review (What's this?)

The harness was easy to install. Soldering experience is essential. It worked the very first time.

Pros: nice quality wire.

Cons: none-so far

Ford Wire Harness

Written by: silverhorseGT06 from Aiken, SC on November 5, 2012

2006 Ford Mustang
Crutchfield Customer Review (What's this?)

This made easy work of installing a new JVC touch-screen head unit, even with the Shaker 500 amps!

Pros: Wiring was easy to follow!

Cons:

Not bad - good fit!

Written by: GaryM from Broomall, PA on October 9, 2012

2004 Ford Mustang
Crutchfield Customer Review (What's this?)

Works well with my '04 Mustang! instructions were easy to follow, just did not indicate what to do with the blue wires which go to the amps (in my Mach 460 system). Figured it out readily enough but would have been nice to know up front. The rest was all good.

Pros: Fits Great! Quality construction. Easy to follow instructions.

Cons: As noted on other reviews, some additonal info ad clarity for Subs and External Amp connections would be helpful. Still gave it 5 stars cause it works!

Fits great!

Written by: Jeff from Levittown, NY on September 24, 2012

2004 Ford Mustang
Crutchfield Customer Review (What's this?)

See Below...

Pros: Color coded cables made this simple to set up.

Cons: A little confusion on the amp turn on wires. More clarification is suggested in the instructions.

Ford Wiring Harness

Written by: AlanI from Wake Forest, NC on September 9, 2012

2003 Mercury Marauder
Crutchfield Customer Review (What's this?)

The only signal thing missing in the harness is one for the Steering Wheel Controller. Otherwise, it was good.

Pros:

Cons: No signal wire for the Steering Wheel Control.

Perfect fit!

Written by: Reed from Reno, NV. on August 29, 2012

2005 Ford Expedition
Crutchfield Customer Review (What's this?)

This connector fit my 2005 Expedition perfectly. No unexpected surprises.

Pros:

Cons:

Wiring Harnes - 2004 Mustang

Written by: Paul from Houston, Tx on August 21, 2012

2004 Ford Mustang
Crutchfield Customer Review (What's this?)

These two looms are brilliant. It made the installation of the radio very easy. Everything was color coded so there was no reason to test wiring or trace the wiring.

Pros: Color coded and worked first time, no problems

Cons: None.

Good Job!

Written by: DeCarius from Montezuma, GA on June 29, 2012

2004 Ford Mustang
Crutchfield Customer Review (What's this?)

I have a 2004 Ford Mustang.. This harness is easy to install.. I didn't think it was gonna work with my subs at first but it does and it's easy to install thanks.

Pros: Perfect fit, easy to install.

Cons: None.

Doesn't work in the 2004 Town Car Ultimate

Written by: cdb from Jacksonville, FL on June 23, 2012

2004 Lincoln Town Car
Crutchfield Customer Review (What's this?)

Although the speaker harness does work , the Subwoofer out connecter is not compatible. Unfortunately spend $64.00 including Saturday Delivery. The problem with the RCA conncecter is that there are wires in the connector that connect to nothing on the car side. Pins 1,2,3,4 are populated on the vehical side. Pins 5, 6, 7, 8 are empty. On the aftermarked harness, pins 1, 2, 4, 5, 6, 8 are all populated. Had to buy another amp and subwoofer just to recieve bass.

Pros: Half of the harness works

Cons: The other half doesn't

Works great

Written by: cosswald from Chicago, IL on June 19, 2012

2007 Ford Escape
Crutchfield Customer Review (What's this?)

All cable colors correspond to factory cables. It was a bit confusing when connecting to the subwoofer, but only took a few moments to figure it out (for me it was the solid blue wire from the RCA cable connection)

Pros: Simple Straightforward

Cons:

Ford harness kit - keep it simple!

Written by: RonE from Pioneer, CA on June 18, 2012

2007 Mercury Mariner
Crutchfield Customer Review (What's this?)

Could not have been simpler. One-for-one, color matched wiring along with an easy-to-understand 'map' of the wiring.

Pros: ease of use, high-quality materials, perfect match

Cons: None so far

Wire HArness

Written by: PEter from FL on June 13, 2012

2006 Ford Escape
Crutchfield Customer Review (What's this?)

Works great and does what its suppose to do. Only complaint isn't the product fault but the instructions: it took me while to figure out where to connect the Amp turn-on wire. I had to call Crutchfield and they told me to connect it to the power antenna of the receiver. Once i did that it worked perfectly (FORD ESCAPE 2006)

Pros: Easy to use, works great

Cons: none for the product its self but for the instruction didnt explain where to connect Amp turn-on wire

Metra 70-5521 Receiver Wiring Harness

Written by: Dean from Newtown Square, PA on June 12, 2012

2006 Lincoln LS
Crutchfield Customer Review (What's this?)

Overall good product. My factory unit had additional plugs that were not necessary for the installation of the new unit. It would have been nice for the instructions to note the additional plugs may not be used.

Pros: Made the install easier.

Cons: Had to call the tech line to figure out what to do with the extra plugs from the back of my original unit.

Metra 70-5521 Receiver Wiring Harness

Written by: db from tioda on June 10, 2012

2007 Ford F-150
Crutchfield Customer Review (What's this?)

makes a boom sound every time i turn it on..................... called said to go buy... a 12v to 5 v regulator????? why not sell me one the first time so i do not have to take radio back out and put in a regular ? makes no sence

Pros:

Cons:

Perfect

Written by: SK from Philadelphia, PA on May 6, 2012

2005 Ford Focus ZX4
Crutchfield Customer Review (What's this?)

Works great. All the instructions were clear and the harness plugged seamlessly into my factory harness.

Pros: Works perfectly

Cons: None

Plug & Play

Written by: KenP from Englewood, OH on April 27, 2012

2007 Ford F-150
Crutchfield Customer Review (What's this?)

This wire harness provided a simple plug and play solution for installing a Clarion CX501 into a 2007 F-150. It requires some technical skills and soldering. The only issue was having to install a voltage reducer into the subwoofer power feed after the new radio caused the factory subwoofer to pop loudly when the radio come on.

Pros: Helps simplify installation without cutting into factory wiring.

Cons: None.

Just one thing...

Written by: JohnB from Allen TX on March 1, 2012

2006 Ford F-150
Crutchfield Customer Review (What's this?)

This is nearly a must for installing your stereo because it makes it so much simpler. I have a 2006 F150 King Ranch with sub, but found that I needed to do one additional thing. My Crutchfield advisor mentioned (thanks!) that I needed to add a linear regulator circuit (uA7805) to lower the voltage from my new Sony 770 Nav remote amp signal to my Ford sub amp remote enable. This circuit drops the Sonys 12V output to 5V, was not hard to do, but certainly added some complexity since I needed to build the circuit ( i did it myself since I'm a EE). This is just FYI. Do all the wiring on this cable before you start your installation and it will save lots of time. The Crutchfield tech guys are a big asset because they can look up specific wires from your vehicle and tell you where to tap into them.

Pros: Highly recommended - A real time saver and fits perfectly.

Cons: Two of the wires I needed on this connector were not populated. These were the steering wheel control wires and really should have been there. I just had to tap into these wires on the cars connector (before this one). Not a stopper, just more time consuming.

Metra 70-5521 Receiver Wiring Harness

Written by: Anonymous from Stuttgart, Germany on February 17, 2012

2004 Ford Mustang
Crutchfield Customer Review (What's this?)

I'm an amateur when it comes to cars, but this harness made installing my radio very simple. I was able to easily follow the instructions and everything turned out great...until I turned the sound on. For some reason, the subwoofers won't turn on. I tried disconnecting the plugs, but there was no difference in the sound. Sadly, it makes my music sound hollow, and I'm almost tempted to put my factory radio back in. If it wasn't for that, I would have 5-stared it.

Pros: Super easy even for us n00bs.

Cons: Subwoofers didn't connect.

Makes connection easy

Written by: Dave H from Byron IL on February 2, 2012

Crutchfield Customer Review (What's this?)

Makes connections very easy. The only thing I can think of to improve this product would be if it came with solderless connectors.

Pros: Makes connection to vehicle harness very easy. Connection is OEM quality.

Cons: None

Metra 70-5521 Receiver Wiring Harness

Written by: Anonymous from Chattanooga, TN on October 26, 2011

Crutchfield Customer Review (What's this?)

This is a must have item for a 2005 Ford F150 Crew Cab with the sub speaker in the back.

Pros: The shipping was fast & it was just plug & play. Very easy to install.

Cons: You will hear a pop when the receiver is turned on. Not sure how to stop the pop sound.

Crutchfield response on November 1, 2011 We forwarded this review to our Technical Support team for follow-up. Lifetime tech support comes with every Crutchfield purchase.

Ford Receiver Wire Harness

Written by: morlocke from Laurel,MD on September 28, 2011

2005 Ford Focus ZXW
Crutchfield Customer Review (What's this?)

Excellent

Pros:

Cons:

Worked Perfectly (after I received the right harness)

Written by: Alex from Fontana, CA on September 6, 2011

Crutchfield Customer Review (What's this?)

I have an 03' Expedition with the in dash CD changer. Apparently, I have the stock receiver for the 04'. When I was doing the install, I realized that that the wire harness Crutchfield sent me wasnt the right one. So I called tech support and they told me they would sent me out the right one. So I had to wait for the right harness for another 5 days. This should have been caught by Crutchfield when the order was placed, hence the 4 stars.

Pros:

Cons:

Perfect Connections!

Written by: Ken T from Rosedale, MD on August 11, 2011

2004 Ford Mustang
Crutchfield Customer Review (What's this?)

This kit made wiring my new head unit easy. The fact that all the wire coloring matches the head unit harness made connecting it together almost fool proof. Definitely one of the best reasons to go with Crutchfield...

Pros:

Cons:

Will Cause Amp Turn-On Pop with Mach 300 System

Written by: Mike from US on July 2, 2011

This harness does match up with the Mach 300 system in an 05 Ford Escape Limitied. However, the amp for the sub in the Mach 300 system receives a 6volt input on the remote wire, instead of the 12v remote voltage that this harness will give the amp. Everything will work fine, but you will receive a turn-on pop from the sub if you use this harness. The fix is to wire a 12v to 5v voltage regulator to this harness.

Pros:

Cons:

Very Good

Written by: roystd1 from Memphis, TN on April 19, 2011

2004 Ford Mustang
Crutchfield Customer Review (What's this?)

I have a 2004 Mustang with the Mach 460 system and wanted to use my factory amps with my new head unit. This product allowed me to do just that.

Pros:

Cons:

Ford wiring harness missing one wire

Written by: KeithM from Chandler, Arizona on March 30, 2011

2004 Ford Explorer
Crutchfield Customer Review (What's this?)

The harness worked great, with one exception. I was installing the Axxess aswc at the same time I installed my new JVC stereo. The aswc needed to be connected to pin 18 of the car stereo connector, but the supplied harness did not have a wire in pin 18. I had to cut into the car harness to make the connection. If they added a pin 18 wire, this would be a 5 star product!

Pros:

Cons:

Metra 70-5521 Receiver Wiring Harness

Written by: Rich from MA on March 22, 2011

2004 Ford Explorer Sport Trac
Crutchfield Customer Review (What's this?)

I have a Ford Explorer Sport Trac XLT Premium, overall this harness works for an aftermarket stereo, however I would have liked a circuit to mute the amp when turning the stereo on. I would be happy to help with making a cheap and simple circuit to wire into the amp mute wire using a 555 timer and a couple resistors.

Pros:

Cons:

does not fit the 2005 XLT 6 disc model

Written by: Michael from Virginia Beach, VA on March 3, 2011

2005 Ford Escape
Crutchfield Customer Review (What's this?)

It didn't fit our 2005 ford escape xlt.

Pros:

Cons:

Metra 70-5521 Receiver Wiring Harness

Written by: Eric R from Columbia KY on November 20, 2010

2005 Ford Focus ZX3
Crutchfield Customer Review (What's this?)

Worked perfectly, received extra fast.

Pros:

Cons:

Metra 70-5521 Receiver Wiring Harness

Written by: Rudy from Navarre on October 30, 2010

2005 Ford Escape
Crutchfield Customer Review (What's this?)

Nice wire harness, synced up perfectly to factory installed one.

Pros:

Cons:

Metra 70-5521 Receiver Wiring Harness

Written by: bud56 from Marion, Ks on October 24, 2010

Crutchfield Customer Review (What's this?)

Simple, even I was able to do it.

Pros:

Cons:

What? I Was Confused/But Works Great!

Written by: Miller from Maryland on September 24, 2010

2005 Ford Expedition
Crutchfield Customer Review (What's this?)

I am a female and have never installed a radio in a car. I didn't know what went where, so I have an extra part - the red/white audio cables (still don't know what those are for). I obviously didn't need it because it sounds great! My husband hooked up the wiring for me and I plugged it in and did all the rest of the installation myself. My 2005 Ford Expedition has never sounded better! I could have called the excellent support team @ Crutchfield, but I didn't need to bother them really. It's all plug and play. If it doesn't fit, don't force it!

Pros:

Cons:

Metra 70-5521 Receiver Wiring Harness

Written by: Anonymous from merritt island,fla on September 13, 2010

2004 Mercury Mountaineer
Crutchfield Customer Review (What's this?)

perfect fit. Great service!

Pros:

Cons:

2004 Ford Mustang GT w/ Shaker 460

Written by: Brian from Trenton, NJ on August 2, 2009

2004 Ford Mustang
Crutchfield Customer Review (What's this?)

Very easy install thanks to this product. Was worried that the subs wouldn't work, but the RCAs made it simple to plug into the back of my kenwood KDC-HD942U. Surprised at how horrible the stock head unit was. Didn't provide anywhere near the power of the kenwood. If you are considering swapping the head unit out, I would HIGHLY recommend doing so!

Pros:

Cons:

Perfect!

Written by: Matt from Las Vegas, NV on February 3, 2009

2004 Ford Mustang
Crutchfield Customer Review (What's this?)

Simple and easy! No issues at all!

Pros:

Cons:

Seems to Work

Written by: Steve from Orange County, CA on September 8, 2008

2008 Ford Mustang
Crutchfield Customer Review (What's this?)

This product seems to do what it was intended to do, but it was not matched correctly to my vehicle by Crutchfield. This made the installation of my head unit much more difficult with tech support phone calls, internet research, and trips to auto parts store. Apparently, some of the latest Ford Mustangs with the Shaker 500 (possibly Shaker 1000, too) systems have a much different connector/wiring system than before. I believe they are utilizing the MSCAN databus which allows more control over electronics, etc. For the record, I have a 2008 Ford Mustang Bullitt and I needed to tap into an accessory 12V for power, my reverse light wire for backup camera, and install a 5V regulator to eliminate the popping of my Shaker 500 door woofers. After all is said and done, the harness works, but made a lot more work for me. Especially since this is the first stereo I have installed myself.

Pros:

Cons:

Metra 70-5521 Receiver Wiring Harness

Written by: Ron from Auburndale, FL on April 5, 2008

2005 Ford Mustang
Crutchfield Customer Review (What's this?)

This harness is sweet!! I installed a pioneer AVIC-D3 head unit with this harness and it went together in a breeze!! I was concerned with having the shaker 1000 system in my can but everything works and I think it even sounds better with the new unit than the OEM... This product deserves a 10!!!! :-)

Pros:

Cons:

Excellent

Written by: jon from Southaven, Ms. on April 2, 2008

2005 Ford Mustang
Crutchfield Customer Review (What's this?)

Perfect fit. No problems here.

Pros:

Cons:

install n a snap

Written by: marty from Grove City, Ohio on December 13, 2007

Crutchfield Customer Review (What's this?)

this product is sweet!! i installed a apline dvd head unit and used this harness and went together n a snap!! the small plug n is for the factory sub&amp and you just have to hook up one wire to the remote wire from your head unit to turn on the factory amp. you will need to buy a set of rca's so you get the sound the to the amp. i give this item a 10 out of a scale from 1-10 very happy i bought this item!!!! :-)

Pros:

Cons:

This was perfect...

Written by: Lil Red from Plano, TX on September 12, 2006

2007 Ford Explorer Sport Trac
Crutchfield Customer Review (What's this?)

I was very pleased with this wiring harness. I ordered it for the installation of the Pioneer AVIC-Z1 in my 2007 Ford Explorer Sport Trac and it was perfect. The connections were 100% correct and it made the installation real easy.

Pros:

Cons:

Details

Hands-on research

What's in the box?

Download the Metra 70-5521 Receiver Wiring Harness manual

  • 7" Receiver wiring harness
  • 13" RCA harness

Product Research

Features

Crutchfield Wiring Harness: Crutchfield wiring harnesses prevent you from having to cut your vehicle's factory radio plug when replacing your factory radio with an aftermarket head unit. Simply solder or crimp the Crutchfield wiring harness to your aftermarket head unit's harness (solder & crimps not included), plug the aftermarket head unit's plug into the rear chassis of the aftermarket head unit, and plug the Crutchfield wiring harness into your vehicle's factory radio plug.

Note: Installation tools, hardware, & accessories are not included & sold separately. Please see the Accessories tab for recommendations & availability.

Wiring Notes: If the Crutchfield wiring harness is not equipped with a ground wire, you will need to ground the aftermarket head unit's ground wire to the metal chassis of your vehicle. Some vehicle's may require you to bypass the vehicle's factory amplifier (in another location from factory radio) or hardwire certain connections. If your vehicle is equipped with factory steering wheel controls, an additional adapter is required & sold separately.

Wire Code Chart:

(Receiver Wiring Harness)

Wire Color Function
Red +12 Volt Accessory
Yellow +12 Volt Constant
Black Ground
Blue Power Antenna
Orange Illumination
White Left Front Speaker +
White/Black Left Front Speaker -
Gray Right Front Speaker +
Gray/Black Right Front Speaker -
Green Left Rear Speaker +
Green/Black Left Rear Speaker -
Violet Right Rear Speaker +
Violet/Black Right Rear Speaker -

(Amp Turn-On/Subwoofer Wiring Harness)

Wire Color Function
Empty (none)
Blue/White Amp Turn-On
White RCA Left Subwoofer Channel
Red RCA Right Subwoofer Channel

The Crutchfield Car Selector: Please visit the Crutchfield Car Selector for your specific type of vehicle.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Accessories
Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

This will make installation a lot easier to install an aftermarket radio. Also, it has the rca conversion wiring needed to use your oem door woofer with an aftermarket head unit. [ Alex  Jul 12, 2016 ]
I have installed a JVC receiver before with a harness and it worked without any problems [ John  Jun 27, 2016 ]
For my truck [ G  Jun 26, 2016 ]
The wiring harness was the last part I needed to install my new radio in my Marauder and Crutchfield was the only company that had the harness that I needed. Thank you. [ Stephen M.  Jun 21, 2016 ]
I will install new stereo on a 2005 Ford Mustang equipped with a Shaker1000 Sound System and want to keep the sub-woofers operational. I will update and rate the ease of installation as well as functionality of the wiring harness for future references (Update by 5/14/2016). Nestor_L [ Nestor  May 04, 2016 ]
Becasue I need it to install my headunit with my car [ Donovan  Apr 29, 2016 ]
to install radio [ Chester  Apr 20, 2016 ]
It looks nice [ Lizbeth  Apr 09, 2016 ]
Its what i need to connect to my factory amp system [ Jason  Mar 29, 2016 ]
radio install [ KENNETH  Mar 29, 2016 ]
Free [ John E.  Mar 29, 2016 ]
Fits my 2004 Ford Expedition [ Vincent  Mar 25, 2016 ]
needed to connect to existing wiring harness [ George  Mar 17, 2016 ]
NEEDED IT FOR PROPER INSTALLATION [ RAUL  Mar 15, 2016 ]
perfect [ JEFF  Mar 15, 2016 ]
Easy to install and to save time. [ LUIS  Mar 09, 2016 ]
One of the main reasons I shop Crutchfield. Free gear and easy install. Whoever thinks they can't install a car stereo, they are wrong. The simplified instructions Crutchfield provides is an absolute must have. Been shopping with them since 1991 (out of the catalog and mail back then). [ DWAYNE  Mar 02, 2016 ]
item was used for new Kenwood car stereo in a Ford Escape with a factory sub. [ ALEXI  Feb 26, 2016 ]
It comes with the stereo I ordered, so why not? [ Kevin S.  Feb 17, 2016 ]
Worked great [ Mark  Feb 15, 2016 ]
It fits my 2003 Lincoln Town Car [ Matthew  Jan 25, 2016 ]
comes with hardware suggested [ Christopher  Jan 21, 2016 ]
will always need it to be on the safe side of things [ marvin  Jan 06, 2016 ]
Got to have these. [ Bobby  Dec 15, 2015 ]
Free plus to make installation easier [ Mark  Dec 04, 2015 ]

4 questions already asked

Thanks for your question. The product page lists what the connections are for: 12V constant power 12V switched power chassis ground dimmer left front speaker +/- right front speaker +/- left rear speaker +/- right rear speaker +/- amp turn on RCA cables for the signal to the woofers If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the connections on the product. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/. [ Kenny  Apr 09, 2016 ]  Staff
I believe the other harness is for just the steering wheel controls. If you don't buy the steering wheel control adapter for your receiver, you will lose these functions. [ KEVIN  Aug 07, 2014 ]
We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question. [ Krissy  Aug 06, 2014 ]  Staff
This will depend largely on your vehicle. For details on installation please contact an Advisor by phone or online chat. They will be able to pull up your vehicle and give you the details on what you will need for an installation. [ Jeff  Jan 06, 2014 ]  Staff
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/. [ Jeff  Jan 03, 2014 ]  Staff
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