Customer Reviews

you will need this

Easy install just follow the very clear instructions

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

This worked flawlessly, made my install so much easier. The second set of wires was not needed however since we were installing a new amplifier and subwoofers. Also this configuration left another set of factory wires unattached. I am not 100% sure what they are for (probably Shaker 1000 system), however nothing came from Crutchfield to connect to that fitting. Looking back I would definitely pay for the additional crimping, however I would have essentially had to cut some wires if I had gone that route since we were running a new sound system.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Worked well.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Love this system. Fit perfect for an old 2004 Mustang. More fun to drive than ever. Dash kit was a must have. Harness was perfect, and connectors were a valuable extra item to purchase. Super happy with this purchase.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Inluded wiring harness made installation easy.

Have questions for
?

Crutchfield response on

You are all I Need.

After wiring my pioneer dehs6220bs to harness it's a simple plug and play install. Thanks Crutchfield.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Works as advertised. No issues

Have questions for
?

Crutchfield response on

Ford Mustang GT 2005

Work grate

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Did not provide me with the correct harness for my amplifier subwoofer connection. Double checked vehicle is correct but my amplifier is a more flat wide connector with only two wires not the square one with only two wire connectors that was provided

Have questions for
?

Crutchfield response on 10/18/2022

Once we saw this review, our Tech Support specialist, Henry, reached out to Aaron to help him further. Whenever you encounter a problem with anything you purchase from Crutchfield, please contact our Tech Support team right away. Lifetime tech support comes with every Crutchfield purchase.

Metra 70-5521 Receiver Wiring Harness

Made install so easy

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Perfect fit & function. I soldered the wires & used heat shrink. No issues whatsoever

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Perfect fit

Have questions for
?

Crutchfield response on

Works perfectly ***except***

Works perfectly except there's no pin for the steering wheel radio switch in this harness. This would be pin #18. I assume most people installing an aftermarket stereo would want this in order to be able to control the stereo using the steering wheel controls. My receiver has an input for CONT and needed the Axxess ASWC-1 Steering Wheel Control Adapter. Problem with the Metra 70-5521 harness is without having pin 18 present and wired, I have to tap the wire on the car's side of the harness. Not an especially big deal, but why not wire pin #18? If not needed, installer can simply not use it and tape it off.

Have questions for
?

Crutchfield response on

Unsure

This cable, specifically the red and white RCA connectors gave me problems. When I connected those 2 to the radio in any of the spots on the back of the radio (4 possible spots) I had a loud popping noise in all speakers. I did call and left a message but that never got returned. I actually left those 2 disconnected because I didn't get a call back and just wanted to finish the installation.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

I paid extra to have a Crutchfield tech prewire this for the Boss BE62CP that I bought. Unfortunately, the left and right front speaker wires had bad crimps. I worked with Han via email and worked through this without a lot of trouble. Everything works fine now. It was never clear where to place the RCA plugs. I guess the instructions got lost along the way. I know you do a lot of these per day. They are extremely cost effective unless you need to rewire one. My advice double the price and take the extra time to do continuity checks before sending them out. Customers will never realize how valuable this service can be until they have a problem. Service is one reason I spend a bit extra to shop with Crutchfield!

Have questions for
?

Crutchfield response on

100% accurate

Works great. Crutchfield products always been 100% accurate anytime I use them now I just wish somebody would have not taken the factory amp and speaker box out of my truck to use the other component that came with the harness.

Have questions for
?

Crutchfield response on

Worked like a dream

Hooks up and works amazing on my 2007 mustang (replaced the shaker500) and put a Hodozzy radio in and worked like a charm

Have questions for
?

Crutchfield response on

Metra wiring harness

This makes mating the harness to the truck plug easy for anyone, and I'm not electrically gifted. Just be careful to match colors and colors with a stripe on it, I almost goofed up but my wife caught it, she held the wires together while I soldered.

Have questions for
?

Crutchfield response on

Worth every penny

Save yourself headaches and time!! Get this and let them Make connections. Talked to tech support on where to tap into reverse light, within 2 minutes I had pictures of it in an email. Awesome customer service and helping me select the product that fit my car perfect. Hooked it all up and it fired up with all functionality correct .

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Used this on a 2004 Mustang Mach 1. It plugged right in to the factory harness.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Was added as part of a Boss car kit. Well made and worked great. Ford F150, 2005

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Great , made it easier to install

Have questions for
?

Crutchfield response on

Simple install with Crutchfield

Easy to match up with factory harness and step by step instructions were also helpful on removal of factory deck.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Always buy the suggested accessories

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Exactly what I needed! The purchase process was quick and simple.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Very easy to install came with great instructions

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

that's what it's supposed to

Have questions for
?

Crutchfield response on

Fits perfectly

Fit perfectly into my 2004 F150 with excellent instructions. Quality of sound is very good and all features worked as spec'ed.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Perfect for 2006 Mustang with Shaker500

Have questions for
?

Crutchfield response on

Great product

Very easy to install, works like it should

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

This made the process of installing my radio super easy. The wiring was simple to follow and easy to match up to the aftermarket radio harness. It was nice to see that most of the wires matched up in the same color scheme as the aftermarket radio harness.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Exactly what I needed for the job! Crutchfield always comes through with the right parts!

Have questions for
?

Crutchfield response on

Aftermarket radio adapter harness

This harness paid for itself with the amount of time it saved on install. Just solder the corresponding wires from the radio harness and the Metra harness. Crutchfield was nice enough to send instructions whic saved even more time.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

worked perfectly

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

It works like it's supposed to

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Great Service with very fast shipping. Great Company to business with.

Have questions for
?

Crutchfield response on

Just what i wanted!

Harness made stereo a easy install, included good instructions and I watched a you tube video. Made installation very easy the first time.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Good product, wiring options for the amp harness would be helpful. Made the installation much easier, I'll use and recommend again.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Made installation from factory radio so much easier.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Easy and painless to install with little wiring experience

Have questions for
?

Crutchfield response on

Excellent product

Don't do it without it

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Comets directly in

Have questions for
?

Crutchfield response on

super easy to use

This harness makes hooking up an aftermarket head unit a snap. Was able to wire up the head unit in about 20 minutes total time.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Worked perfectly

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Very easy to navigate

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Made the wiring process a lot easier

Have questions for
?

Crutchfield response on

Good Quality.

Good Quality.

Have questions for
?

Crutchfield response on

Factory plug

Easy installation,

Have questions for
?

Crutchfield response on

Works great!

Works great!

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Worked perfectly

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Worked great

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Relatively simple

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Wiring harness in Crutchfield wiring assistance is the way to go. Their customer service and support is excellent.

Have questions for
?

Crutchfield response on

Easy and Nice

Easy, all colors matched perfectly with a Sony head unit, great quality. Crutchfield also is amazing when it comes to instructions. Hooked everything up in a 2007 Mustang GT and it sounds great thanks to the ease of this wiring harness.

Have questions for
?

Crutchfield response on

Great product

Perfect fit for my 05 ford freestyle

Have questions for
?

Crutchfield response on

Almost everything you need for a 2007 Ford Escape with OEM amplifier.

Great kit for installing a radio in my sons 2007 ford Escape with the OEM amplifier. Well documented and great quality construction. I ended up soldering and shrink-tubing all the connections for a robust solid install. Note: If you still have the OEM amplifier, you will also need an Axxess AFDI-5V adapter for the amplifier.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Awsome easy plug and play

Have questions for
?

Crutchfield response on

Making radio installation a breeze!

Worked as advertised

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Nice

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

the harness works but I paid the extra $ to have Crutchfield connect all the ends , some were not crimped properly. Even though that the Crutchfield tech help find the issues no refund for poor workmanship .Also disappointed that you would have to get the more expensive harness just to get an AUX cable connection even thought i do not have steering wheel controls

Have questions for
?

Crutchfield response on 7/15/2019

Once we saw this review, our Customer Support specialist, Angie, reached out to issue this customer a refund.

Metra 70-5521 Receiver Wiring Harness

Works great and was super easy to install

Have questions for
?

Crutchfield response on

Perfect

It worked perfectly. Exactly what I needed.

Have questions for
?

Crutchfield response on

Works

Perfect fit, perfect price.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Works perfectly with the Axxess AFDI-5V 12-volt to 5-volt converter. I was a little confused at the wiring of the smaller amp plug with the step down converter because the connector had 2 blue with white stripe wires in it. The 24 pin connector has 1 blue with white stripe wire in it as well. After a call to crutchfield they told me to connect both the blue and white wires of the smaller connector to the blue with red stripe wire of the step down converter and then connect the blue with white strip of the step down converter, the blue with white stripe of the 24 pin connector and the blue with white stripe amp turn on wire from the stereo together. Following those instructions everything works and there is no thump when I turn the radio on. Thanks again to Crutchfied's awesome tech support! I just bought this car and there was an aftermarket stereo in it already. It did not have one of the step down converters and it did thump whenever you turned the car on so I know that thing it doing something and would highly recommend that accessory for this setup.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Easy hook up

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Easy installation, worked great to replace the Shaker 500 in my 06 Mustang

Have questions for
?

Crutchfield response on

The adapter makes the job a little easier

Instructions were fair. The adapter should have included one more wire for the steering wheel controls. It forced me to strip, splice and tape one more wire than there should have been. Otherwise it was well thought out.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

I thought I had a problem with the wiring adaptor for the subwoofer connection, turns out I had connected the wrong blue/white wire, which turns the amps on, to the unit harness. Since there are two blue/white wires pay attention to which row the wires are in on the factory plug and splice the one that will align with those. Don't worry with the configuration of the RCA plug wires, they only use one anyway. It looks like some are on the row without wires on the factory plug but it works, just trust it.

Have questions for
?

Crutchfield response on

This harness is a no brainer.

simple solution to a fool proof connection. Best thing is you retain the factory connection.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

The Metra colors lined up perfectly with the colors on the Pioneer head unit.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Harness kit and instructions are well worth the price. Makes connecting an aftermarket head unit so much easier. Having the Crutchfield website tell you what you'll need for the installation is a great convenience. Used in a 2005 Ford Escape with factory sub.

Have questions for
?

Crutchfield response on

Subwoofer power pin out doesn't match

Subwoofer connector is not correct for the 2006 Mustang Shaker 500. There are 4 wires on one row, not split across both rows. Power-shield (ground)-Left-Right 4. 3. 2. 1.

Have questions for
?

Crutchfield response on

Incomplete

I have a 2007 Mark LT which is a Lincolnized F150 Supercrew with the factory sub. On the main connector, The steering wheel controls are pins 18 and 19, reverse is pin 6, Vehicle Speed Sensor is pin 14, all these are missing. This connector seems geared to a bare bones 2004 F150 with no options. The completely omitted medium size connector on your factory radio that you wonder why it is not in this kit, is for a separate DVD player and back seat entertainment that takes over only the rear speakers when in use but it also contains the input wires from the 1/8" aux jack on the Dashboard Tray. If it's there and can be used, it should be hooked up, this kit will not allow a clean way to do this due to that connector being completely omitted. The only way to make this complete is to by two, take some of the pinned wires out of one and add them. There is no reason to splice into vehicle wiring for reverse, VSS, and steering wheel controls. The only things that need splicing are the emergency brake and if you are able to make use of it, the + and - CAN BUS wires. Hint: The C220A connector to the instrument cluster (Upper Left) contains all three of these and is easy to get to and not far from the head unit. Parking brake is pin 24, pin 31 is CAN BUS + and pin 32 is CAN BUS -, now if iDatalink would work with us on this, I have contacted them. I gave it three stars because it will at least get you on the road with a usable but inconvenient installation with no steering wheel control

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Good product

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

The Metra harness kits fit properly & seem to always have good instructions

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Delivery was FAST. Everything in box that was needed. No hassle hookup. Works flawlessly. A+ all around.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Perfect , I hate having to cut into stock wiring and this helps eliminate that portion.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Works great for my 2006 Ford Mustang! I only found a couple very minor drawbacks. First, even with the illumination wire properly connected, I am still unable to automatically control the dimmer function for my JVC KW-R930BTS stereo when the headlights are turned on. Second, I don't think my car's vehicle speed sensitive volume control works with an aftermarket stereo (I don't use that function anyway). However, I am strongly convinced that both of these drawbacks are caused by an extra factory plug-in that is not used for my application. Even still, this Metra wiring harness deserves a 5-star rating!

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Easy connection. Saved me money. Plus satisfaction of it being done right.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

The connections to the stock harness were good and tight and I haven't had any trouble with interference due to a bad connection/pin. My biggest complaint is that it doesn't come with wires for the steering wheel remote buttons or even pins to add those wires in, yourself, yet it comes with other wires that not all vehicles will have/use. For the wires that were there, I wanted it to look as professional as possible, so I went the more tedious route of soldering the wires between this harness and the radio's harness, then covered them with heat-activated shrink-wrap, and I must say, it looks WAY better than the crimp/wire nut option I see a lot of others using. It also takes up considerably less space in the dash. The only way to improve on this is to directly connect the receiver's wires to the pins in the harness clip/cover (though I'd worry about wrecking a pin or the plastic housing doing this). I did have a small discrepancy between the provided guide and my radio's manual, but did find that the power antenna/amp wire does, in fact, connect to the "rem out 0.4" cable on the Sony XAV-AX100, in order to turn on the stock premium sound system's sub-woofer.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Instructions state all wires are used for a 06 Mustang. After putting all the wires together, I was left with 1 wire. After a call to Crutchfield they said it isn't used for my vehicle. Instructions should be updated.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Really like the harness and the complete instructions. I'll always come to Crutchfield.. thanks so much!!!

Have questions for
?

Crutchfield response on

Great product

worked great! instructions were spot on and easy enough my 16 yo son was able to complete these tasks.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Hooked up in the ready harness. It saved lots of time on the install

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Did what it was designed to do.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Lots of wires. Perfect fit and the radio works great.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Excellent

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

plug and play music.

Have questions for
?

Crutchfield response on

Perfect fit

Perfect fit, Easy to put together. Made radio install easy.

Have questions for
?

Crutchfield response on

Amazing sound

Colors match right up just need to read instructions to easily make it plug and play.a splice kit would be nice or at least the proper splice connectors for even easier instal.however since Crutchfield is offering this harnes at no extra charge it's a no brainer all the way around. Crutchfield is the only place to go for answers on any audio in my book they have always known exactly what any of my installs need to be successful.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

I was very impressed with the plugs, I don't know if it was dumb luck or not but the wire colors for the radio and the car harness were even the same (after compared to the prints) This is so much cleaner and easier than hacking into the car harness. I was able to wire up the plug at the kitchen table and then just plug into the car. These things have come a long way since I installed my last aftermarket radio. The Crutchfield system made it easy to find and recommend the parts I needed for my car (06 Ford Escape)

Have questions for
?

Crutchfield response on

Must have item

This is a must item---especially for any first time receiver install kit folks out there (like myself). The instructions that came with the kit were pretty clear, it just took some time initially to review, re-review, and took my time wiring this up. Crutchfield tech support was good, too.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Crutch field has everything to make the job so much easier.

Have questions for
?

Crutchfield response on

Be careful if you have a 2005 Escape Hybrid

Did not fit my 2005 Ford Escape Hybrid, even though Crutchfield's system recommended it. It turns out that for later-year 2005 FEH with Nav feature, you want to use the Metra 70-1776 harness instead. Crutchfield sent a free replacement with the correct harness so no complaints there.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Crutchfield earned this 5 with their support. My vehicle was a first run. Changes were made to factory harness connections within first year of vehicle production. I got home late from work and a support tech was instantly available on phone. He absolutely knew about it and confirmed my adjustment presumptions.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness

Pretty good connectors and adapter. Not hard to connect and install so that's always a plus.

Have questions for
?

Crutchfield response on

Great Product

Easy to install. No problems after hooking it up.

Have questions for
?

Crutchfield response on

Metra 70-5521 Receiver Wiring Harness