1-888-955-6000
crutchfield.com
Crutchfield

Metra 70-7904 Receiver Wiring Harness

Connect a new car stereo in select 2001-up Mazda vehicles

Zoom
  • Metra 70-7904 Receiver Wiring Harness

    Front

 

Metra 70-7904 Receiver Wiring 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.

See more info on this item

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

Hands-on research from the Crutchfield Labs (what are the Labs?)

Product Research
What's in the box?

Download owner's manual

  • Receiver wiring harness
  • Instructions

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 open the box, verify contents, 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.

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:

Wire Color Function
Red +12 Volt Accessory
Yellow +12 Volt Constant
Black Ground
Blue Power Antenna
Blue/White Amp Turn-On
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 -

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

 
Review this product
Great Gear Giveaway rewards card

Submit a review and then enter to win a $500 rewards card

Metra 70-7904 Receiver Wiring Harness Reviews

Average Customer Review:

109 people say:

Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left
Filter by rating:
5 out of 5

Metra 70-7904 Receiver Wiring Harness

Written By Anonymous, Henderson ky. on Tuesday, August 19, 2014
Crutchfield Customer Review (What's this?)
 
Easy install with the connectors
Pros:
Perfect match
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Good Harness

Written By Steven S, Dallas, TX on Wednesday, August 13, 2014
Crutchfield Customer Review (What's this?)
 
Fit perfectly on my '05 MX-5. No install issues. The Crutchfield install instructions made connecting to the Pioneer AVH-X2600BT simple.
Pros:
Plug and Play
Cons:
None
Was this review helpful?    Yes | No
 
4 out of 5

Good harness, could use some tefiniment

Written By Patrick, Roanoke, Virginia on Saturday, July 26, 2014
Crutchfield Customer Review (What's this?)
 
Fits very well and the color coded wires are great. The only reason I gave this four stars is because it's missing pins to tie in the factory steering wheel controls. I had to buy a second harness to get two pins to install the steering wheel adaptor without cutting the factory wiring harness.
Was this review helpful?    Yes | No
 
5 out of 5

Good harness

Written By Anonymous, Clovis ca on Thursday, July 17, 2014
Crutchfield Customer Review (What's this?)
 
Does what it's suppose to on MS3
Cons:
If replacing stock stereo you won't be able to hook up the oem screen
Was this review helpful?    Yes | No
 
5 out of 5

Works perfectly

Written By Jake, New Jersey on Saturday, July 05, 2014
Crutchfield Customer Review (What's this?)
 
Works great, does exactly what it's supposed to do. Great product.
Was this review helpful?    Yes | No
 
5 out of 5

a real time saver

Written By james mc, tallahassee fl on Thursday, June 26, 2014
Crutchfield Customer Review (What's this?)
 
installed my first car stereo in 1973 when you were on your own to figure out wiring harnesses, etc, this saved a lot of time and worked out of the box.
Was this review helpful?    Yes | No
 
3 out of 5

Adapter

Written By RedHead, Kansas on Friday, June 20, 2014
Crutchfield Customer Review (What's this?)
 
When I received my adapter it didn't work. I went through a TON of troubleshooting only to figure out the adapter was wired wrong.The red wire was in the wrong hole on the adapter so this was making my stereo not even turn on. I thought I had a faulty stereo. Fortunately, Crutchfield has amazing customer support and they sent me a new adapter and after 5 days I received it, hooked it up and TADAA it works.
Was this review helpful?    Yes | No
 
5 out of 5

Perfect.

Written By Alex, Columbia, MO on Sunday, June 08, 2014
Crutchfield Customer Review (What's this?)
 
Used this to connect my factory harness to my new Pioneer FH-X700BT. Probably took me about 20 minutes to wire in the harness and then plug it in. I drive a 2005 Mazda 3 Hatch, 6 speakers, no nav, and no Bose sound. This works perfectly. This is my first time installing aftermarket audio. Instructions made it incredibly easy and straightforward. Pretty much, just match the colors, twist, crimp, tape, and zip-tie. Clean install. Crutchfield shipped it stupid fast to my doorstep. I love it.
Pros:
Plenty of beefy wire to work with. Wires are already stripped. Instructions were easy to read, with a well laid-out wiring diagram.
Was this review helpful?    Yes | No
 
5 out of 5

Miata good match

Written By Dan, Easton pa on Friday, June 06, 2014
Crutchfield Customer Review (What's this?)
 
03 miata perfect fit
Pros:
Fit
Cons:
None
Was this review helpful?    Yes | No
 
4 out of 5

Simplified installation process

Written By donb, Carmel, CA on Friday, May 16, 2014
Crutchfield Customer Review (What's this?)
 
Installation instructions helped tremendously and everything, including illumination control worked fine.
Pros:
Works fine
Cons:
None
Was this review helpful?    Yes | No
 
4 out of 5

cd player

Written By matthew, Amarillo tx on Sunday, May 11, 2014
Crutchfield Customer Review (What's this?)
 
Love the cd player and the help I received installing it.
Was this review helpful?    Yes | No
 
5 out of 5

Good Choice For My Installation

Written By bcl, Alabama on Wednesday, May 07, 2014
Crutchfield Customer Review (What's this?)
 
This wire harness made my installation much easier than it could have been. The instructions matched the wire colors of my vehicle and head unit exactly. I soldered my connections and used shrink tubing to keep it neat and everything just snapped together when the head unit was installed. The only thing that would make this easier is if there was a solderless way to make good secure connections. Definitely better than trying to install without this. I would definitely get this again.
Pros:
Very good instructions. Decent quality materials.
Cons:
Soldering is a little tedious.
Was this review helpful?    Yes | No
 
4 out of 5

Perfect fit for 2004 Mazda 3

Written By PrestonG, Rockville, MD on Thursday, April 24, 2014
Crutchfield Customer Review (What's this?)
 
Very easy harness to wire. I matched and soldered all connections. It was not clear that if you connected both the red(+ ignition) and black (- ground), that you also had to connect the yellow(+ battery), but a quick call to the Crutchfield support line fixed that. Make sure you connect both the red and yellow sets of wires.
Pros:
Snaps in to the stock wiring harness perfectly.
Cons:
Have to connect wires manually. If you are no good at electrical, I suggest you take it to an installer. Instructions could be a little clearer.
Was this review helpful?    Yes | No
 
4 out of 5

Good but not perfect

Written By AaronL, Sterling, MA on Thursday, April 24, 2014
Crutchfield Customer Review (What's this?)
 
This harness did fit and work mostly fine, and includes all the common wires. Unfortunately, it does not include wires for the factory Bose amplifier that some cars come with. You will have to move a few wires in the Metra harness around in order to make that work without hacking up the factory harness.

In the end, I lost the pins for the power antenna (which I don't have), and the illumination signal (which I was hoping to keep). However, all of the important functions are fine.
Pros:
Prevents you from having to modify the factory harness
Cons:
Missing a few wires so requires modifying the Metra harness
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Very happy with this harness.

Written By B., Southern California on Monday, April 21, 2014
Crutchfield Customer Review (What's this?)
 
Very happy with the harness. All wire colors matched with the accompanying head unit. Perfect fit with the factory harness.
Pros:
fit.
Cons:
none.
Was this review helpful?    Yes | No
 
5 out of 5

Worked perfectly

Written By Hal, Hagerstown, MD on Saturday, April 19, 2014
Crutchfield Customer Review (What's this?)
 
The harness worked perfectly.
Pros:
Perfect fit.
Cons:
none
Was this review helpful?    Yes | No
 
5 out of 5

Great harness

Written By james, 33952 on Thursday, April 17, 2014
Crutchfield Customer Review (What's this?)
 
Exactly what I needed and had an illumination wire as well
Pros:
See above
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Great Harness

Written By Glenn, Atlanta on Saturday, April 12, 2014
Crutchfield Customer Review (What's this?)
 
I originally ended up with the wrong harness delivered with my Pioneer head unit. After a quick call with the Crutchfield Tech Support team, they got me squared away with the exact match for my Mazda with a factory subwoofer (very important if ordering for an MPV).
Pros:
I loved the pre-spliced wires; made for quick prep-work before my in-vehicle install process. Very pleased with the fact that harness configuration included a specific connect for the vehicle ground wire... took the guess work out of locating a suitable ground location within the dash cavity. I believe this has had lent itself to the excellent HD Radio reception I'm receiving from the unit!
Cons:
None.
Was this review helpful?    Yes | No
 
5 out of 5

No more cutting wires

Written By Anonymous, Cocoa, Fl on Thursday, April 03, 2014
Crutchfield Customer Review (What's this?)
 
Perfect fit into stock harness. Soldered to the new radio wiring harness. Could not have been easier.
Was this review helpful?    Yes | No
 
5 out of 5

Easy

Written By DaleA, Hampton, VA on Friday, March 21, 2014
Crutchfield Customer Review (What's this?)
 
Very easy to configure.
Was this review helpful?    Yes | No
 
5 out of 5

Easy as Pie

Written By David G, Ocala FL on Wednesday, February 26, 2014
Crutchfield Customer Review (What's this?)
 
It was exactly what it was suppose to be with excellent quality and performance. The instructions were spot on with the Car and the product was top notch. Thank you Crutchfield for supplying me with quality products from quality Subs
Pros:
Everything, Quick fast shipment, spot on product of highest quality
Cons:
None :)
Was this review helpful?    Yes | No
 
5 out of 5

Mazda 626 Receiver Harness

Written By TerryG, Ashtabula, Oh on Wednesday, January 15, 2014
Crutchfield Customer Review (What's this?)
 
Excellent color match and ease to work with when soldering and matching up with Kenwood Stereo. Sure beat the old days of the 80's being upside down under the dash with a test light trying to figure out which was what. Looking forward to next install in another vehicle.
Pros:
Added bonus with Kenwood stereo.
Cons:
none
Was this review helpful?    Yes | No
 
5 out of 5

Mazda Receiver Wire Harness

Written By JoshB, Denver, CO on Sunday, January 12, 2014
Crutchfield Customer Review (What's this?)
 
The Harness worked well and made for a clean install. All the wires were properly located for hook up.
Pros:
Easy install, worked well, made for a clean install.
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Perfect

Written By Tim S, Vista, CA on Thursday, January 09, 2014
Crutchfield Customer Review (What's this?)
 
Makes it so easy to install an aftermarket stereo. If you're not color blind, then you can use this harness.
Pros:
Ease of use.
Cons:
Doesn't allow for use of factory steering wheel controls. That requires another harness.
Was this review helpful?    Yes | No
 
5 out of 5

Very Doable

Written By CDL, Oklahoma on Wednesday, January 08, 2014
Crutchfield Customer Review (What's this?)
 
Very Easy to understand and do.
Pros:
Anybody can do
Was this review helpful?    Yes | No
 
5 out of 5

Mazda Wire Harness

Written By Will, Phoenix, Az on Monday, January 06, 2014
Crutchfield Customer Review (What's this?)
 
Worked as advertised. Easy to use instructions.
Pros:
none
Cons:
none
Was this review helpful?    Yes | No
 
5 out of 5

Stero harnest

Written By Rbrian89, Wenatchee wa on Tuesday, December 17, 2013
Crutchfield Customer Review (What's this?)
 
Really easy to install good quality wires and comes with instruticons really easy to read
Was this review helpful?    Yes | No
 
5 out of 5

Metra 70-7904 Receiver Wiring Harness

Written By Anonymous, Arnold md on Monday, December 16, 2013
Crutchfield Customer Review (What's this?)
 
Does exactly what it's suppose too.
Pros:
Easy to install
Cons:
Not the easiest instructions
Was this review helpful?    Yes | No
 
5 out of 5

Metra 70-7904 Receiver Wiring Harness

Written By Ted, Minneapolis, MN on Monday, December 09, 2013
Crutchfield Customer Review (What's this?)
 
Designed to fit perfectly. There is no malfunction at all.
Was this review helpful?    Yes | No
 
4 out of 5

Mazda wiring harness

Written By MarkP, Madison, VA on Monday, December 02, 2013
Crutchfield Customer Review (What's this?)
 
Wiring harness worked as designed. Instructions should have included wiring color codes for the car installed. I had to look up online. Otherwise, very easy to install.
Pros:
Ease of installation.
Cons:
No information on wiring color codes of car being installed in.
Was this review helpful?    Yes | No
 
5 out of 5

Works!

Written By Lashk, Walker, LA on Saturday, November 23, 2013
Crutchfield Customer Review (What's this?)
 
Works as promised!
Pros:
Everything
Cons:
Nothing
Was this review helpful?    Yes | No
 
5 out of 5

harness

Written By Gary, Bellevue, NE. on Saturday, October 26, 2013
Crutchfield Customer Review (What's this?)
 
This is a must have if you want to keep your original wiring should you ever want to put your old unit back in. Makes the new HU a lot easier to install. Takes a little time to do the wiring but can all be done and ready before the install is even started. Installed on my 2010 Mazda MX-5 Miata
Pros:
Makes the install easier
Cons:
a lot of wire work and may be missing some of the wires like other people including myself found out. So buy 2 of them and you should be ok.
Was this review helpful?    Yes | No
 
5 out of 5

Metra 70-7904 Receiver Wiring Harness

Written By Anonymous, Weeping Water, NE on Saturday, October 19, 2013
Crutchfield Customer Review (What's this?)
 
excellent, works perfect
Was this review helpful?    Yes | No
 
4 out of 5

Almost perfect

Written By McGee, Chesapeake, Va. on Thursday, October 17, 2013
Crutchfield Customer Review (What's this?)
 
Excellent harness, works perfectly with Bose equipped 2013 MX-5 GT. Unfortunately you will need to purchase at least two for a complete install as it is missing three wires. You can pull the required wires from a second unit to make up for the missing reverse, 1P and 1N.
Pros:
Works great
Cons:
Missing 3 wires I needed for a complete install of a double din nav unit.
Was this review helpful?    Yes | No
 
5 out of 5

Mazda wiring harness

Written By Ricky, Winston Salem, NC on Friday, September 06, 2013
Crutchfield Customer Review (What's this?)
 
It fits like a glove
Cons:
none
Was this review helpful?    Yes | No
 
4 out of 5

great item

Written By carrie m, wesley chapel, FL on Tuesday, July 30, 2013
Crutchfield Customer Review (What's this?)
 
it was fairly easy to just match up the colors and solder them together
Was this review helpful?    Yes | No
 
5 out of 5

Easy Street

Written By Gus Nap, Houston, TX on Thursday, July 18, 2013
Crutchfield Customer Review (What's this?)
 
Easy to install. Easy to understand step by step instructions. This was my first install of a car stereo and my friends and I are very impressed.
Pros:
easy to install and a perfect fit.
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Metra 70-7904 Receiver Wiring Harness

Written By d, albuquerque, nm on Monday, June 24, 2013
Crutchfield Customer Review (What's this?)
 
good instructions, work right
Was this review helpful?    Yes | No
 
5 out of 5

easy pesy

Written By PDubLA, LA on Monday, June 10, 2013
Crutchfield Customer Review (What's this?)
 
Perfect match! Easy to follow instructions and wiring diagrams to provide a clean and factory looking installation. Love these added features from Crutchfield!
Pros:
Easy to follow wiring diagrams
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

everything worked

Written By DaveD, Cincinnati on Thursday, June 06, 2013
Crutchfield Customer Review (What's this?)
 
Everything worked as designed, I soldered everything and made no mistakes, it all worked the very first time
Pros:
worked as designed
Cons:
none
Was this review helpful?    Yes | No
 
5 out of 5

Perfect

Written By macgeek, Charleston, SC on Friday, May 24, 2013
Crutchfield Customer Review (What's this?)
 
Perfect. That sums it up. I remember many years ago cutting the factory connector off and wiring a new head unit it directly, with this harness that is not necessary. match up the wires on both sides, make your crimps or solder joints and plug both ends in. Done!
Pros:
This makes it Easy!
Cons:
None that i can think of.
Was this review helpful?    Yes | No
 
5 out of 5

Made installing easy

Written By Kevin, Philadelphia, PA on Wednesday, May 22, 2013
Crutchfield Customer Review (What's this?)
 
Made connecting my new receiver to my 2003 Mazda Protege LX really easy. The wire colors all matched with the receiver wires making it easy to match them up.
Was this review helpful?    Yes | No
 
5 out of 5

Perfection

Written By rbprivate1, Greenwood, MO. on Monday, May 20, 2013
Crutchfield Customer Review (What's this?)
 
Very easy, just spliced color for color soldered and taped connection.
Pros:
Perfect match of colors to make up.
Cons:
Would have been nice to have solderless connectors.
Was this review helpful?    Yes | No
 
5 out of 5

Does exactly what I wanted

Written By kls7773, Odenton, MD on Monday, May 20, 2013
Crutchfield Customer Review (What's this?)
 
This harness made installing my stereo a breeze! Just match the colors.
Pros:
Easy to follow instructions.
Cons:
none.
Was this review helpful?    Yes | No
 
5 out of 5

Easy Connection

Written By The2Arys, Corpus Christi, TX on Thursday, May 16, 2013
Crutchfield Customer Review (What's this?)
 
I was a little nervous about connecting into such a big wire bundle but it worked like a champ! Just match the colors and connect the wires. It worked first try.
Pros:
Easy to connect. Just match the colors.
Cons:
Said before, but it IS a lot of soldering. It WOULD be nice if there were an adapter plug with the appropriate plugs on each end already made.
Was this review helpful?    Yes | No
 
5 out of 5

Harness

Written By jackk, Rocklin Ca on Wednesday, May 01, 2013
Crutchfield Customer Review (What's this?)
 
connection to the radipo was easy, could have arrived at my house with many connections alread made!
Pros:
easy to solder together
Cons:
none
Was this review helpful?    Yes | No
 
5 out of 5

Good Connection

Written By MO, Edison NJ on Monday, March 11, 2013
Crutchfield Customer Review (What's this?)
 
Plug in perfect, is not too bulky so help to accommodate my new installation perfect.
Pros:
exact match
Was this review helpful?    Yes | No
 
5 out of 5

great and easy install

Written By Snowflake, Florida on Sunday, March 10, 2013
Crutchfield Customer Review (What's this?)
 
installed this in a 2008 Mazdaspeed3 GT really easy to install, was a plug and play after all the wires are connected to each other, all the colors matched so it made it that much easier.
Pros:
plug and play
Cons:
i needed two more wires for the aftermarket steering wheel controls, had to tap into the factory ones.
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

worked great

Written By rob, brentwood on Monday, March 04, 2013
Crutchfield Customer Review (What's this?)
 
Works perfectly
Was this review helpful?    Yes | No
 
5 out of 5

Easy and Right

Written By Rev. Beth, Nashville TN on Friday, March 01, 2013
Crutchfield Customer Review (What's this?)
 
Easy to install - the right harness for the job!
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Mazda 3 Wire Harness

Written By Qazar, Austin, TX on Saturday, February 09, 2013
Crutchfield Customer Review (What's this?)
 
The colored wires on the Pioneer wire harness were a perfect match for the colors on this harness (although a little brighter or dimmer) which made it easy to keep track of the connections. I used crimp-on butt connectors with heat shrink. It took about half hour to finish the job and the new stereo worked the first flawlessly the first time it was connected. Definitely a time saver.
Pros:
All the wire colors matched and it came with my order. No hunting for parts.
Was this review helpful?    Yes | No
 
4 out of 5

Metra 70-7904 Receiver Wiring Harness

Written By Izzy, Tampa, Fl. on Sunday, January 27, 2013
Crutchfield Customer Review (What's this?)
 
Was impressed everything fit well. Thought the wires might be a little thicker and pre cut.
Cons:
Wires to thin.
Was this review helpful?    Yes | No
 
5 out of 5

'02 Protege Radio Wiring Harness

Written By Chris, Naples, FL on Friday, January 04, 2013
Crutchfield Customer Review (What's this?)
 
I works just fine.
Pros:
The plug fit the car's system and all the needed wires were there.
Cons:
A lot of soldering. A compatable plug on each end would have simplified the installation.
Was this review helpful?    Yes | No
 
4 out of 5

Satisfied customer

Written By Phi_alpha, Greenville, NC on Thursday, January 03, 2013
Crutchfield Customer Review (What's this?)
 
Crutchfield takes the pain out of completing a stereo install by yourself by providing the right harness when you buy a stereo from them. The instructions and harness helped me get it done. I wish the steering wheel controls for the stereo would work with this harness!
Pros:
Free with purchase
Cons:
Doesn't retain radio controls on steering wheel.
Was this review helpful?    Yes | No
 
4 out of 5

It's OK

Written By Fausfez, Sacramento, CA on Monday, October 08, 2012
Crutchfield Customer Review (What's this?)
 
easy to install, color code is easy to figure out. It does the job
Was this review helpful?    Yes | No
 
5 out of 5

Metra 70-7904 Receiver Wiring Harness

Written By Anonymous, Los Angeles, CA on Thursday, September 06, 2012
Crutchfield Customer Review (What's this?)
 
Perfect. Worked well and instructions from the harness kit works to the tee. I had a bunch of 3M wire connectors that does not require splicing and I was done in half hour. I had to double check make sure I'm connecting the right colors.
Was this review helpful?    Yes | No
 
5 out of 5

Harness

Written By ERK, Georgia on Friday, August 24, 2012
Crutchfield Customer Review (What's this?)
 
This product worked fine
Was this review helpful?    Yes | No
 
5 out of 5

Metra 70-7904 Receiver Wiring Harness

Written By Anonymous, NY on Thursday, August 23, 2012
Crutchfield Customer Review (What's this?)
 
Easy,worked like a charm... I recommend getting the Posi cconnectors. They are very useful
Was this review helpful?    Yes | No
 
5 out of 5

Metra 70-7904 Receiver Wiring Harness

Written By MiataGuy, Dayton, OH on Thursday, June 28, 2012
Crutchfield Customer Review (What's this?)
 
Perfect adapter and excellent instructions
Was this review helpful?    Yes | No
 
5 out of 5

Worked great!

Written By William G., Marshall, NC on Sunday, June 17, 2012
Crutchfield Customer Review (What's this?)
 
This wiring harness worked great in our 2005 Mazda Tribute. The colors matched up with the stereo we bought and we used wire crimp caps instead of soldering. It went together perfectly and quickly.
Was this review helpful?    Yes | No
 
5 out of 5

Easy install

Written By Alex, FL on Monday, June 04, 2012
Crutchfield Customer Review (What's this?)
 
Easy install and everything works with my Mazda Protege5.

Other reviews complain that connectors are not included...it has bare wires on one end...of course you'll need to use crimps or solder. An obvious requirement in my book. It wired up easy, and most of the colors even matched my JVC head unit.

The included instructions were easy to understand and spot on!
Pros:
clear instructions much better than cutting into your car's wiring!
Was this review helpful?    Yes | No
 
4 out of 5

Worked perfectly

Written By John, Seattle WA on Monday, May 28, 2012
Crutchfield Customer Review (What's this?)
 
All in all, a great product. Was the correct unit for the pigtail that plugs into the back of the stock unit.

The biggest thing was stripping the wires of the HU's pigtail, splicing, soldering and taping. Once done, it was as simple as click, click, plug in the antenna lead and slide the HU in, badda boom, it's installed.

Pros:
makes installation of an aftermarket HU so much easier and allows you to not butcher the stock wiring harness for such a project.
Cons:
None
Was this review helpful?    Yes | No
 
4 out of 5

Must Have!

Written By bmo, Colorado on Monday, May 28, 2012
Crutchfield Customer Review (What's this?)
 
Must have accessory if you're swapping out the factory head unit. Steering wheel radio controls become inactive. Otherwise, great time saver.
Pros:
Speeds installation considerably.
Cons:
Loss of steering wheel controls.
2 out of 2 people found this helpful
Was this review helpful?    Yes | No
 
3 out of 5

Would like more

Written By Glennb, Concord NH on Thursday, May 17, 2012
Crutchfield Customer Review (What's this?)
 
This Wire Harness works well for standard installs
Cons:
If you need to install a steering wheel control module you need to cut into the factory harness for the two wires to complete the installation. You would think they could have made these wires a part of this harness to make it easyier.
2 out of 2 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Mazda Receiver Wire Harness

Written By Todd B, Covington, LA on Monday, May 07, 2012
Crutchfield Customer Review (What's this?)
 
No problems, works as described.
Was this review helpful?    Yes | No
 
5 out of 5

Mazda wire harness

Written By Used in 08 Mazda 3, San Jose, CA on Thursday, May 03, 2012
Crutchfield Customer Review (What's this?)
 
It's a wiring kit, and it works. Plug and play! BTW keep it easy, don't solder just use wire crimp connectors.
Was this review helpful?    Yes | No
 
4 out of 5

Works with mostly everything, no wires for CANBUS or steering wheel co

Written By Ex., Capitol Heights, MD on Monday, April 23, 2012
 
Works and color matches with my Pioneer P3400BH. Doesn't have a pin for the red wire for the steering wheel controls or the violet wire that needs to be grounded for the steering wheel adapter to work.
Pros:
Color matches with my HU
Cons:
No steering wheel controls wires
2 out of 2 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Metra 70-7904 Receiver Wiring Harness

Written By Anonymous, Geneva, NY on Tuesday, April 03, 2012
Crutchfield Customer Review (What's this?)
 
Very easy, all the colors matched to my pioneer stereo.
Pros:
All the wires are labeled right on the wire.
Was this review helpful?    Yes | No
 
3 out of 5

Mazda Protege

Written By RobertoP, Seattle on Monday, March 19, 2012
Crutchfield Customer Review (What's this?)
 
The hanses fit, but there are no connectors provided to mate it to the radio harness. Crimp to fit connectors should have been included. Soldering was recommended in the instructions provide with the harness, but not mentioned in the Crutchfield instructions. Required a trip to the parts store and a purchase of a tool and connectors.
Pros:
Works
Cons:
Requires buying connectors to make the proper connection to the radio.
Was this review helpful?    Yes | No
 
5 out of 5

Easy

Written By Phil M, Las Vegas on Saturday, March 17, 2012
Crutchfield Customer Review (What's this?)
 
Hooked up a new head unit to a 2005 Mazda Tribute with the 7-speaker system. Easy as pie.
Pros:
So simple a ______________ could do it.
Was this review helpful?    Yes | No
 
4 out of 5

Made wiring a snap, But Could Be Better

Written By Old School, Seattle, WA on Monday, February 27, 2012
Crutchfield Customer Review (What's this?)
 
This came included with my radio kit, and overall made the install a breeze. I was able to do almost the entire wiring job at my workbench inside and not in the car. If they had only put two more wires into the plug, I could have done the whole job indoors, and it would have been a perfect plug and play job. (are you listening Crutchfield) If you install the AWSC there is a Data and 12v gnd wire on the car side plug, that is missing on the adapter side. (I had to splice into the car harness to make up for this.) I believe most all of the Mazda 5s have the wheel controls, and assume most would want to use them. Plus the AWSC recognized this car, and our JVC. No programming needed. You could install the radio in the Dash Plate, Wire the plug and AWSC, and have everything done and ready to go, all on the the workbench. Just plug in and go.
Pros:
Majority of wire colors matched my new JVC install.
Cons:
Did not have any pin/wires installed for the AWSC install.
2 out of 2 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

so easy a geico salesman could do it

Written By DGF, Atlanta, GA on Monday, February 27, 2012
Crutchfield Customer Review (What's this?)
 
This harness was so easy to install. The wire colors all match the pioneer cables, so pretty much foolproof.
Pros:
super easy. colors match pioneers cables. included with radio. Free is good.
Was this review helpful?    Yes | No
 
2 out of 5

Check before install AWSC!!!

Written By Stan, Chicago on Wednesday, February 01, 2012
Crutchfield Customer Review (What's this?)
 
Everything works if you are using it only for radio but if you want to use your radio with AWSC check the pins!!!. This harnes has a factory error. Pins responsible for wheel control are made as a mirror. It means that correct for Mazda MPV 2006 should be pins 1(P) and 2(NC) but factory installed (in aftermarket harness)are pins 4 and 5. It took me all day to figure out that originally made harnes is wrong. I remake the harness (I used small long nose pliers), hook up the AWSC module and everything started work as it supposed to.
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Wiring Harness Adapter

Written By R-L, Los Angeles on Wednesday, February 01, 2012
Crutchfield Customer Review (What's this?)
 
Saves a lot of headache when adapting a post-market car stereo to your car.
Pros:
Plenty of lead(in case you make a mistake)
Cons:
Could use a tool and instructions on how to move a pin. I had to move one to make this work with my stering-wheel remote adapter without cutting the car's actual harness.
Was this review helpful?    Yes | No
 
5 out of 5

Perfect match

Written By LouisG, Richmond, VA on Friday, January 27, 2012
Crutchfield Customer Review (What's this?)
 
Made installation a breeze.
Pros:
Wires were labeled exactly as they needed to be to match correctly.
Cons:
Only a suggestion: The antenna lead is only so long, and that makes it harder to install. Could you include a small (6") antenna lead extender? That would avoid some scraped hands!
Was this review helpful?    Yes | No
 
5 out of 5

Adapter harness

Written By Jim, Loveland on Saturday, January 21, 2012
Crutchfield Customer Review (What's this?)
 
Made the installation of aftermarket radio an easy job.
Pros:
It works great
Cons:
My only suggestion would be to mention that both amplifier turn on and power antenna wire need to be connected to blue external equipment wire, or you get lousey radio reception - especially on AM.
Was this review helpful?    Yes | No
 
3 out of 5

Metra 70-7904 Receiver Wiring Harness

Written By Daveinpt, Port Townsend,WA on Tuesday, January 17, 2012
Crutchfield Customer Review (What's this?)
 
The good news is that it works.
Pros:
Everything was there to make it work.
Cons:
The instructions were not particularly clear. I would have preferred an overall (for the entire installation) step by step that included the entire process. There were one less lead on the unit and it was unclear just what to do about that.
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Mazga 3 harness

Written By Walt, Cocoa, Florida on Tuesday, January 17, 2012
Crutchfield Customer Review (What's this?)
 
The radio was wired in quickly into the harness. I had trouble getting the steering wheel adapter wired in, however. Two QUICK calls to Crutchfield had me up and running. The manufacturer had left out critical information about wiring the adapter into the harness.
Pros:
Saves a LOT of time, very straight-forward to install
Cons:
steering wheel adapter instructions were lacking, not the fault of Crutchfield nOR the wring harness
2 out of 2 people found this helpful
Was this review helpful?    Yes | No
 
4 out of 5

color-coded perfection

Written By p, Loganville, GA on Sunday, November 13, 2011
Crutchfield Customer Review (What's this?)
 
The colors between the harness and radio were a perfect match. The was one less on the radio and it was easy to determine power antennae was the difference and not needed.
Pros:
color coding made it so easy
Was this review helpful?    Yes | No
 
5 out of 5

Wiring made easy

Written By Randy, Glendale, Az on Tuesday, September 13, 2011
Crutchfield Customer Review (What's this?)
 
Could not make the installation look more professional. Had no problem matching the wires up, i choose to solder and use heat shrink instead of twist caps and tape. It plugged in perfectly with the tributes harness and made life easy. Will always use these kind of connection instead of cutting wires. I recommend everyone to use these adapters.
Was this review helpful?    Yes | No
 
4 out of 5

Metra 70-7904 Receiver Wiring Harness

Written By Bill L, Infianapolis IN on Sunday, September 11, 2011
Crutchfield Customer Review (What's this?)
 
Makes the change very clean. Would be better if all the pins were installed for future changes.
Was this review helpful?    Yes | No
 
5 out of 5

2002 Tribute Owners

Written By Russ C., Meadville, PA on Thursday, June 09, 2011
Crutchfield Customer Review (What's this?)
 
I bought this harness for an '02 Tribute with a manufacturing date of 08/01. Unfortunately, when I removed the factory stereo I discovered that my car was wired with the 2001 style harness. Crutchfield customer service was extremely helpful and sent me the correct harness an no extra cost. Thanks a lot, guys.
Was this review helpful?    Yes | No
 
2 out of 5

mostly worked O.K.

Written By Anonymous, Texas on Friday, April 15, 2011
Crutchfield Customer Review (What's this?)
 
The overall connection worked fine, the plug was a little picky during plugging in
time, the pins in the connector are a little loose so it takes a little jiggling to get
them lined up. There were 2 pins not included that I needed to support the
steering wheel volume control between my Kenwood stereo and the Axxess
ASWC. I ended up buying another connector and taking two of those pins out.
Metra should up their pin count to support that!
Was this review helpful?    Yes | No
 
5 out of 5

Metra 70-7904 Receiver Wiring Harness

Written By pedro, peabody ma. on Friday, March 11, 2011
Crutchfield Customer Review (What's this?)
 
perfect fit to my car oem plug
Was this review helpful?    Yes | No
 
2 out of 5

Worked fine, needed some tweaking

Written By Ol' Beaks, Raleigh NC on Monday, February 21, 2011
Crutchfield Customer Review (What's this?)
 
This wiring harness was good and worked well until it came time to connect a
Kenwood KDC-x994 to a SWI-JACK steering wheel control adapter. The adapter
required tapping into pins 9 and 10 of the car's harness, which had no pins
matching in this adapter. It turns out that the 9 and 10 pins on this wire
harness were on the opposide side of the adapter (not a mirror image) so the
pins did not match. I went around town asking if someone could give me some pins
but had no luck. Eventually I simply pulled the pins very hard and they popped
out of the wire harness, then plugged them into the appropriate slots for pins 9
and 10, and everything worked fine. This avoided me having to tap into the wires
behind my car's harness.

Crutchfield tech support said that they couldn't help me with the harness they
sent, and that I would have to tap into my car's wiring; I'm glad I didn't have
to do that.
3 out of 3 people found this helpful
Was this review helpful?    Yes | No
 
4 out of 5

Perfect for radio, but need more wires/pins if doing steering wheel co

Written By Jason, Oak Hill, VA on Sunday, January 30, 2011
Crutchfield Customer Review (What's this?)
 
Adapter fit perfectly in stock wiring harness. However, I had to repurpose two
wires on the adapter to support the pinout for the steering wheel control
adapter (PAC SWI-PS). The Orange and Blue/white wires aren't used on my 09
Mazda 5, and with a eyeglass/precision flathead screwdriver I was able to coax
them out of there original pins to use for the adapter + adapter ground pins.
They were quite difficult to remove, and it would have been nicer if the harness
included a couple pins so you can easily attach your own wires when needed.
2 out of 2 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Mazda Wire Harness

Written By Matt K., Macedonia, Ohio on Sunday, December 05, 2010
Crutchfield Customer Review (What's this?)
 
Great product...
Was this review helpful?    Yes | No
 
4 out of 5

Metra 70-7904 Receiver Wiring Harness

Written By DavidB, Harrisburg, PA on Sunday, November 28, 2010
Crutchfield Customer Review (What's this?)
 
Works great, only way to improve it would be to add the two wires required to
hook up the steering wheel controls.

The way I got around this was to order an additional harness and pull the two
wires I needed out of the second harness and add them to the first harness.

By doing this you eliminate having to splice into the actual wiring of the
vehicle. (In my case a 2008 Mazda Miata MX-5.)

2 out of 2 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Metra 70-7904 Receiver Wiring Harness

Written By Mikey, Orlando, FL on Tuesday, November 23, 2010
Crutchfield Customer Review (What's this?)
 
Worked exactly as described. I have the 10spkr Bose factory system and all spkrs work
thru aftermarket harness...easy install.
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
 
4 out of 5

Fits but no wires for steering wheel remote

Written By TimE, Wakefield, MA on Monday, November 15, 2010
Crutchfield Customer Review (What's this?)
 
Nice product overall but I would have liked if it had included a pass through for the 2
additional wires required to hook up the factory steering wheel controls. I needed to cut
factory wires and splice into them with a remote adapter. Spent a couple of hours trying
to figure that one out but finally called Crutchfield and they were able to help me out right
away :)
2 out of 2 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

PERFECT Fit!

Written By Ray D., Jacksonville, FL on Tuesday, October 05, 2010
Crutchfield Customer Review (What's this?)
 
Worth every penny! Oh yea- it came with the kit for free! Even better. Perfect fit, color
match on wires, everything! Thanks Crutchfield!
Was this review helpful?    Yes | No
 
5 out of 5

Fits perfectly and it was free

Written By SamM, Richmond, VA on Friday, September 10, 2010
Crutchfield Customer Review (What's this?)
 
Being a bit on the dour side, I usually like to have at least one critical
comment, but there isn't anything wrong with this harness. Even the green used
was light enough that my poor eyes didn't have a problem distinguishing the
green green/black wires.
Was this review helpful?    Yes | No
 
5 out of 5

No reason to complain

Written By whyde, Austin, TX on Friday, July 02, 2010
Crutchfield Customer Review (What's this?)
 
What can I say, there's no reason to take any stars off when it works perfectly.
Was this review helpful?    Yes | No
 
5 out of 5

Perfect fit

Written By Anonymous, Exton, PA on Wednesday, June 16, 2010
Crutchfield Customer Review (What's this?)
 
Perfect fit. As long as you or a friend can do basic soldering there's no issue.
Was this review helpful?    Yes | No
 
5 out of 5

very good product

Written By csprings, New Jersey on Friday, June 11, 2010
Crutchfield Customer Review (What's this?)
 
Very good instructions and well made product it made the install very easy.
Was this review helpful?    Yes | No
 
4 out of 5

Pretty good

Written By Anonymous, Colorado on Saturday, May 22, 2010
Crutchfield Customer Review (What's this?)
 
Works fine but the wires for the steering wheel radio controls are not wired through the harness and it sure would have been nice since I installed a PAC SWI-JACK. That little piece caused me a LOT of time and trouble. (Mazda CX7)
Was this review helpful?    Yes | No
 
5 out of 5

Great Item

Written By mediacop, Westchester, NY on Monday, March 29, 2010
 
The item works as advertised and the directions were very clear and thorough. Also, customer support was extremely helpful.
Was this review helpful?    Yes | No
 
5 out of 5

Perfect fit!

Written By Ivan, Miami, Fl on Monday, February 22, 2010
Crutchfield Customer Review (What's this?)
 
At first I was confused, frightened by all the wires. But this harness is super simple. Match color to color, and attach.Slide radio into kit. Voila!
Was this review helpful?    Yes | No
 
5 out of 5

Works great!

Written By Anonymous, Broken Arrow, OK on Sunday, October 18, 2009
Crutchfield Customer Review (What's this?)
 
The wire colors matched the wires of the receiver harness. I chose to solder the wires to the receiver harness, so it took a little longer. Once that was done, it worked perfectly.
Was this review helpful?    Yes | No
 
5 out of 5

2005 Mazda MPV

Written By Michael, Clayton, NC on Monday, April 13, 2009
Crutchfield Customer Review (What's this?)
 
This wire harness's plug mated well with the factory plug and was also easy to connect to my aftermarket stereo. The instructions were easy to read and the wire colors were consistant with modern stereo harness colors too.
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Very easy installation

Written By Pat, Cleves, OH on Monday, April 13, 2009
Crutchfield Customer Review (What's this?)
 
I was impressed with how easy this made the installation of my stereo. While connecting the wiring harness was the most difficult part, that just shows you how easy the rest of the install was. I wouldn't attempt install without this.
Was this review helpful?    Yes | No
 
5 out of 5

Perfect fit!

Written By Cristino, Bayamon, Puerto Rico on Saturday, April 11, 2009
Crutchfield Customer Review (What's this?)
 
Just matched the colors of the plug wires to the radio wires for a perfect match, took no more than 10 minutes... The only thing is that I had to add 2 more pins to the connector to be able to use the steering wheel controls of my Mazda 3 with a SWI-JACK without having to splice the factory wires. No big deal... :-)

2 out of 2 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Worked Fine

Written By Peter, NJ on Saturday, February 14, 2009
Crutchfield Customer Review (What's this?)
 
This was easy to use and install. The instructions were great. I used bullet connectors to connect mine to my radio.
Was this review helpful?    Yes | No
 
5 out of 5

Great Job

Written By Greg, Redding, CA. on Thursday, February 12, 2009
Crutchfield Customer Review (What's this?)
 
This is the best part of the installation. It worked perfectly, and this was my second car radio install in my life (a mechanic I am not!). While the colors were a bit different in radio (purple different shade), the rest I soldered easily. After that it was snap snap and together. The bluetooth connector was a bit difficult, I had to work it until it snapped into place. After that the unit works great.
Was this review helpful?    Yes | No
 
4 out of 5

No Brainer

Written By Mike V., Northeast on Thursday, November 06, 2008
Crutchfield Customer Review (What's this?)
 
You simply match the colors to the radio harness (all pretty much standard these days anyway?) and plug-in is simple - almost. I found that I had bent a couple of the tiny pins (power antenna lead) during the initial conncetion. Easily fixed and more of a Mazda issue than anything Crutchfield did (they are just matching the OEM hardware). About the only possible improvement would be to include some tidy splice tubes (not those bulky crimp connectors that they offer) > '02 Miata LS
Was this review helpful?    Yes | No
 
4 out of 5

Easy install, but needs more connections

Written By Scott, Vermont on Sunday, November 02, 2008
Crutchfield Customer Review (What's this?)
 
It's a wiring harness, what more is there to say. Instructions were excellent as usual for Crutchfield.

It would be even better if it had wires for the steering wheel controls for use with one of the adapters Crutchfield sells. As it is, I'll need to add my own pins to be able to avoid cutting my car's wiring.
1 out of 1 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

Just a wiring harness!

Written By Andrew, Stockton, CA on Wednesday, October 29, 2008
Crutchfield Customer Review (What's this?)
 
Not much to say here. It's a wiring harness, and it does the job just like any other wiring harness. I'm just glad it was included for free!
Was this review helpful?    Yes | No