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Metra 70-7901 Receiver Wiring Harness

Connect a new car stereo in select 1989-2003 Ford and Mazda vehicles

Item # 120707901

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

Find what Fits your car

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

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Item # 120707901

In stock
$12.99
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About the Metra 70-7901 Receiver Wiring Harness

Metra 70-7901 Receiver Wiring Harness

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

Metra 70-7901 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 saves installation time since you won't have to cut factory wires individually, and this also enables you to re-install the factory radio if needed. 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.

Connections:

Note: You'll need to make a ground connection between your new receiver and your car's metal chassis.

  • 12V constant power
  • 12V switched power
  • power antenna turn-on
  • factory amp turn-on
  • dimmer
  • left front speaker +/-
  • right front speaker +/-
  • left rear speaker +/-
  • right rear speaker +/-
READ LESS

What's in the box:

  • 7" Power/front-speaker harness
  • 6.5" Rear speaker harness
MFR #70-7901

Customer reviews

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Metra 70-7901 Receiver Wiring Harness reviews

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Direct plug-n-play for 01 Mazda/Bose

Crutchfield customer from Spring, TX on 7/2/2019

2001 Mazda Miata

Verified customer (What's this?)
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First of all, this is a kit that contains two adapters - in my installation I only needed/used the larger of the two. Once I was able to collect enough information for my specific installation/upgrade, it was simple to identify the color coded wires and connect them to the other wires (and SLC-4 adapter) to make everything work the first time. Simply connected the existing, wired plug from the Bose amp into this, and then everything else into the SLC-4 and Alpine head unit, and rock & roll.

Pros: Works like it should

Cons: Only a con, perhaps, if you've not installed an aftermarket stereo/head-unit since the days of 8-tracks - the instructions might be a bit thin (but the folks at Crutchfield can help you navigate all of this - just contact them!)

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Great wire harness

Crutchfield customer from Greenville, NC on 6/26/2019

1999 Mazda Protege

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Makes connecting to factory wiring easy. No more stripping wires like the old days.

Pros:

Cons:

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Worked perfectly for NA miata

Gba from Waterville, ME on 2/18/2019

1990 Mazda Miata

Verified customer (What's this?)
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Exactly what I needed.

Pros: Worked, good wires, connected strongly to the white plugs. Plugs have good pins.

Cons: None

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Metra 70-7901 Receiver Wiring Harness

Crutchfield customer from Plano, TX on 12/8/2018

1999 Mazda Miata

Verified customer (What's this?)
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worked great, made things easy

Pros:

Cons:

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0 of 0 found this helpful

Metra 70-7901 Receiver Wiring Harness

Crutchfield customer from Saint James, MO on 12/4/2018

1992 Mazda Miata

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Colors and printed cable labels all matched my head unit harness very well.

Pros:

Cons:

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Metra 70-7901 Receiver Wiring Harness

Crutchfield customer from Charlo, MT on 11/29/2018

2000 Mazda MPV

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I though it would plug in to car harness with out cutting and crimping wires when I seen the pic. of the kit

Pros:

Cons:

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Metra 70-7901 Receiver Wiring Harness

Crutchfield customer from Summerville, SC on 11/26/2018

1996 Mazda 626

Verified customer (What's this?)
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Very easy to work with. The wiring instructions matched the car wiring and the radio's wire color code. Made the installation project a breeze.

Pros:

Cons:

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Metra 70-7901 Receiver Wiring Harness

Crutchfield customer from Somers, NY on 9/17/2018

1990 Mazda Miata

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It works

Pros:

Cons:

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0 of 0 found this helpful

indespensible

Brad from Plano, TX on 6/26/2018

1991 Mazda RX7

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color matched wiring took the guess work out

Pros: took the guess work out

Cons: none

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0 of 0 found this helpful

Great product

Crutchfield customer from Rural Hall, NC on 4/29/2018

1990 Mazda Miata

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Worked great, have used the product before with no problems.

Pros:

Cons: None

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0 of 0 found this helpful

Metra 70-7901 Receiver Wiring Harness

Crutchfield customer from Hilliard, FL on 4/13/2018

1991 Mazda Miata

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Works just as it should.

Pros:

Cons:

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1 of 1 found this helpful

Worked perfectly

Stephen from Petaluma, CA on 12/30/2017

1995 Mazda Miata

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Worked perfectly. Easy to read and the cables are just long enough.

Pros:

Cons: none

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0 of 0 found this helpful

Metra 70-7901 Receiver Wiring Harness

Crutchfield customer from Black Mountain, NC on 11/20/2017

1995 Mazda Miata

Verified customer (What's this?)
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This harness made the job super easy. I could not have installed the unit without this.

Pros:

Cons:

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1 of 1 found this helpful

Makes the job easy

Frank from Seattle, WA on 7/21/2017

1992 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

This wiring harness made installation of my radio a piece of cake. I was able to do all the wiring connections on my work bench instead of folded up into a Miata cockpit. That made it so so nice. Then it was just a matter of clicking the harness into the factory harness and I was done. Maybe took 15-20 minutes to do the wiring.

Pros: Work outside of the car, plenty of wire length

Cons: Really can't think of one

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1 of 1 found this helpful

Metra 70-7901 Receiver Wiring Harness

John from Brockton, MA on 6/13/2017

1995 Mazda Miata

Verified customer (What's this?)
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The wiring harness was excellent! It was so easy to install. It matched up precisely with the stock wires, color by color ,so that all I had to do was splice each one and connect them. It was a breeze. So much easier than I expected. It took the guess work out of it. I actually enjoyed the process. Thanks for making it fun.

Pros:

Cons:

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1 of 1 found this helpful

Metra 70-7901 Receiver Wiring Harness

Crutchfield customer from North Carolina on 4/18/2017

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perfect fit for my application. makes the installation process that much a breeze. only problem, the is no lead for ground, but not a deal breaker.

Pros:

Cons:

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0 of 0 found this helpful

Metra 70-7901 Receiver Wiring Harness

Scott from Philadelphia, PA on 3/30/2017

1994 Mazda Miata

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Perfect fit for my 1994 Miata. Quality wires and plugs.

Pros: Perfect fit.

Cons: None!

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0 of 0 found this helpful

Metra 70-7901 Receiver Wiring Harness

Crutchfield customer from Chicago, IL on 2/23/2017

2001 Mazda Tribute

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Perfect fit but I would have liked to have wire connectors included.

Pros:

Cons:

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1 of 1 found this helpful

Metra 70-7901 Receiver Wiring Harness

Steve from Douglasville, GA on 1/2/2017

1997 Mazda Miata

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The color coding was well documented. Using the wiring charts in the radio manual, I was able to make most of the connections, with only a few ambiguous colors. (Illumination vs illumination dimmer, etc.) Would have been nice if it had come pre-wired, but that would have killed the "freebie" thing. After soldering and heat-shrinking the connections (butt-splices will work too, but will take up more space behind the radio) everything worked wonderfully. Thanks for including this. Would have cost me ~$10 anywhere else.

Pros: Worked as designed. Color coding is well documented.

Cons: None.

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Metra 70-7901 Receiver Wiring Harness

Brian from Parker, CO on 12/12/2016

1994 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

great fit although no "snap" connection

Pros: great fit. tie blues together to get power antenna

Cons: no "click" attachement to secure, use Eletrical tape

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0 of 0 found this helpful

Metra 70-7901 Receiver Wiring Harness

Crutchfield customer from Cleveland, OH on 10/31/2016

1990 Mazda Miata

Verified customer (What's this?)
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Being color blind, I HATE wiring kits. When will someone design a better system?

Pros: Once you find someone to match the colors for you, everything fits great.

Cons: NOT designed for those that are color blind.

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0 of 1 found this helpful

Metra 70-7901 Receiver Wiring Harness

Crutchfield customer from Killeen, TX on 10/13/2016

1990 Mazda Miata

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Wiring harnesses are the best thing since sliced bread!

Pros:

Cons:

Crutchfield response on

0 of 0 found this helpful

Plugged in fine after soldering and shrink wrapping.

Ben from Tucson, AZ on 10/12/2016

1994 Mazda Miata

Verified customer (What's this?)
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Straightforward wiring harness.

Pros:

Cons:

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0 of 0 found this helpful

New stereo hook up for the Miata.

Scott from Hebron, IN. on 8/18/2016

1993 Mazda Miata

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Wired right up and plugged right in, no problems whatever.

Pros: Easy install.

Cons: None.

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0 of 0 found this helpful

Wiring harness simple.

pope from Cleveland, OH on 8/9/2016

1999 Mazda 626

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Wiring harness was simple to use and matched the vehicle wiring perfectly.

Pros: Easy to install.

Cons:

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1 of 1 found this helpful

Installation made easy

Tim S. from New Hyde Park, NY on 5/19/2016

2000 Mazda Protege

Verified customer (What's this?)
Verified employee purchase (What's this?)

The wires and connectors were very good quality and made soldering the connections easy, All the work was done no research and color matched head unit connector wires. These connectors in the kit cut the time os the installation down to about 40 minutes with head unit mounting.

Pros: wire good quality and matched head unit wires and colors The connectors fit perfect in factory connectors

Cons: none

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1 of 1 found this helpful

Metra 70-7901 Receiver Wiring Harness

Rick from Lebanon, TN on 4/17/2016

1997 Mazda Miata

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Would give more than 5 stars if possible. Works great. Perfect fit. Makes installation so much easier.

Pros: Perfect fit.

Cons: None.

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0 of 0 found this helpful

Wiring harness

Matt M from Erie, Pennsylvania on 12/26/2015

1996 Mazda 626

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Absolutely perfect

Pros:

Cons:

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0 of 0 found this helpful

1994 Miata Exact Fit

BPSanborn from Massachusetts on 12/15/2015

1994 Mazda MX5

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This wire harness adapter was a perfect match to my 1994 Miata.

Pros:

Cons:

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1 of 1 found this helpful

Great value

Jim C from Texas on 10/27/2015

2000 Mazda Protege

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This made the installation 10 times easier!! Everything was color coordinated, pre cut. Very, very easy to use!

Pros: Color coordinated, pre cut, labeled

Cons: If you are of feeble eyesight like myself, the wording on the wiring is very difficult to see.

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Perfect fit

Jeffmd from Baltimore, md on 10/21/2015

1997 Mazda Protege

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Snapped right in.. Easy install.

Pros:

Cons:

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0 of 0 found this helpful

Metra 70-7901 Receiver Wiring Harness

Chance from Tennessee on 9/7/2015

1993 Mazda Miata

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as easy as plug & play!

Pros: very easy to hook up.

Cons: None

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0 of 0 found this helpful

Perfect for all jobs

Rick3:16 from Pennsylvania on 8/9/2015

1991 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

This saves a lot of time when connecting a radio to any type of car or truck. Instead of having to cut all the wires and splice them all together

Pros: Makes the job easier

Cons: None

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0 of 0 found this helpful

Wrong Wires

Austin P from Beach Haven, NJ on 5/13/2015

2000 Mazda Protege

Verified customer (What's this?)
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I recently had to change my radio for the one that had died out on my 2000 Mazda protégé. As I took out my radio I could see which wires had needed to be changed out. Turns out it was a certain connector piece that needed to be attached to the new radio. The new wires I was directed to by my advisor didn't match up with the piece that was needed for the radio. So now I have to pick out a new piece and splice them. A waste of time.

Pros: Shipping was incredibly fast and showed up on my doorstep in 2 days, my refund came back quickly for my parts and I got to keep the parts for extras.

Cons: Wrong wires, waste of time and money

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1 of 1 found this helpful

Miata radio wiring

Al from Oklahoma on 2/2/2015

Verified customer (What's this?)
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Worked as expected. A little soldering and heat shrinking and Plug & Play. No problems!

Pros: Easy install

Cons: None

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0 of 0 found this helpful

Great wire Harness adapter

Chris C. from Bettendorf, IA on 1/25/2015

1990 Mazda RX7

Verified customer (What's this?)
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Great product and perfect fit.

Pros: Perfect fit.

Cons: No ground wire included.

Crutchfield response on

0 of 0 found this helpful

wiring harness

grampy from North Carolina on 1/21/2015

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Color coding was correct and had no real issues installing this harness.

Pros:

Cons:

Crutchfield response on

0 of 0 found this helpful

Great product

Crutchfield customer from Knoxville tn on 1/5/2015

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Great product, east to use

Pros: N/a

Cons: N/a

Crutchfield response on

0 of 0 found this helpful

Great Product

GRB from Ohio on 12/6/2014

2000 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

This wiring kit worked perfectly with my 2000 Miata. Don't forget to buy some connectors if you choose not to solder them. The colors matched perfectly and with the Crutchfield instructions my install went perfectly.

Pros: Plug and play. Minimal effort on my part other than to match the wires, follow the instructions and make good connections.

Cons:

Crutchfield response on

1 of 1 found this helpful

great

John from Blairsville Ga on 10/19/2014

Verified customer (What's this?)
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made hook up easy !!

Pros: all

Cons: none

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0 of 0 found this helpful

Metra 70-7901 Receiver Wiring Harness

Crutchfield customer from missoula, mt. on 10/5/2014

Verified customer (What's this?)
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It made the install easy

Pros:

Cons:

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0 of 0 found this helpful

Metra 70-7901 Receiver Wiring Harness

Jim in Phx from Phoenix, AZ on 9/24/2014

1997 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

Worked great, just read all the directions, on my car the front and rear needed to be swapped for the speakers to work correctly. 97 Miata M, door tweeters only work if wired as the directions say.

Pros: Worked!

Cons:

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0 of 0 found this helpful

Metra 70-7901

Anthony T from White plains, MD on 7/31/2014

1998 Mazda Protege

Verified customer (What's this?)
Verified employee purchase (What's this?)

This wiring kit was exactly what I needed to complete my radio installation. It was very easy to read and understand the color coded wires. However, I had issues with identifying the correct wire for the rear speaker amplifier, finally after trial and error I was able to locate the wire. Beside that one issue, installation was easy!

Pros: Wiring diagram was easy to understand

Cons: No diagram for rear speaker amplifier

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Perfect fit

Crutchfield customer from Sayreville, NJ on 7/27/2014

1993 Mazda MX3

Verified customer (What's this?)
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This met my needs exactly and I received quick support when I had an issue with shipping. I'm extreamly satisfied with the product and that is why I have spent more than five thousand dollars with this company through referrals and my own use.

Pros: Perfect fit Easy to find

Cons: None

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0 of 0 found this helpful

Simple

Russ from Phoenix, Arizona on 7/17/2014

1991 Mazda MX5

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Made the job a lot easier, color codes on wires lined up perfect.

Pros: Made job easier

Cons: none

Crutchfield response on

0 of 0 found this helpful

Easy install

eROCK from Chicago, IL on 5/9/2014

1997 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

Crutchfield sends this with printed instructions, but you really don't need them. The wires on this kit are color coded to match up with the wiring harness from the new stereo. Just splice together the matching color wires, and that's it! I used a crimping tool with crimp caps to make a fast easy install. No soldering required (you can, but it's not needed).

Pros: Intuitive

Cons: none

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0 of 0 found this helpful

Receiver wire harness for JVC Arsenal

John B from Mishawaka IN on 4/6/2014

2000 Mazda Protege

Verified customer (What's this?)
Verified employee purchase (What's this?)

Instructions were easy to follow, but harness was incomplete. I am probably one of the few people in this world who listens to AM Radio and the static was outrageous. There was a second ground on the back of the unit that was not displayed by the Crutchfield install instructions, nor was a ground connection supplied. I only found this information in the JVC manual after being greatly disappointed in the reception of AM signals. In the future I would suggest that Crutchfield include this information and ground wire with the harness. The Crutchfield install instructions had me stripping wires that I didn't need to, i.e. electric antennae and some sort of illumination wire that did not connected to anything in my unit or car.

Pros:

Cons:

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0 of 0 found this helpful

Excellent Vehicle Specific Harness

Robert from Toms River, NJ on 4/5/2014

2003 Ford Escort ZX2

Verified customer (What's this?)
Verified employee purchase (What's this?)

I purchased this harness based on Crutchfields recommendation that it would fit my vehicle. The harness worked perfectly and made for an easy installation of my after market head unit. Two thumbs up!

Pros: Quick Installation, Perfect Fit, Quality Harness

Cons: N/A

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2 of 2 found this helpful

Great fit! Perfect and saved so much time!

Gene from Rochester, NH on 3/26/2014

1995 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

Great! Perfect fit!

Pros: Everything!

Cons: None

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0 of 0 found this helpful

Wiring Adapter

Ed L from Oxford, MS on 1/31/2014

1994 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

Wiring adapter kit was great.

Pros: Good instructions and easy connections.

Cons: None

Crutchfield response on

0 of 0 found this helpful

Mazda Miata Harness

tom from lake zurich il on 1/17/2014

1997 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

Great product and instructions! Soldering directions were clear and the installation was a breeze.

Pros: instructions and quality

Cons: none

Crutchfield response on

0 of 0 found this helpful

Miata install

Crutchfield customer from Mesa AZ on 12/24/2013

1991 Mazda Miata

Verified customer (What's this?)
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Made install of my stereo a snap. The connection was a perfect fit for my 91' Miata.

Pros:

Cons:

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0 of 0 found this helpful

Perfect fit!

GB from MD on 11/17/2013

2000 Mazda Protege

Verified customer (What's this?)
Verified employee purchase (What's this?)

Used this receiver harness on a 2000 Mazda Protege, and it fits perfectly to the factory harness. Like that the wire ends are pre-stripped, one less thing to do when installing the harness. Great quality and fit. Only issue I had was one slightly bent pin, that needed a bit of straightening, but it was no big deal.

Pros: Great fit, makes installation of receiver much easier, pre stripped wires, high quality overall.

Cons: Had to straighten one pin.

Crutchfield response on

1 of 1 found this helpful

Perfect for 1994 Mazda Miata

B C from San Diego, CA on 11/3/2013

1994 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

Used this to install a single din headunit into my 1994 Mazda Miata with MSSS and premium sound. The harness comes with a clearly laid out wiring diagram and it matches perfectly with the factory color codes. All you need to do is crimp or solder your connections. Don't forget to use heatshrink tubing for a clean install as well. I highly recommend using heat shrink crimps if you're not comfortable with soldering. Also, if your Miata has MSSS like mine did, this will not work with the connections for the seat "sensory sound" device. The headrest speakers work fine though.

Pros: Matches factory wiring color codes and fits perfect with oem wiring harness.

Cons:

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0 of 0 found this helpful

another crutchfield product

corvetteviper29 from Houston, Tx on 10/13/2013

2001 Mazda Tribute

Verified customer (What's this?)
Verified employee purchase (What's this?)

I bought this harness for my 2001 Mazda Tribute. I took my radio out of another car i sold where i also used a harness from crutchfield. I was able to easily put the factory radio back in because of the harness. Using a wire harness makes installing your radio extremely easy.

Pros: easy installation, preserves original wire harness in case you have need to reinstall factory radio

Cons: none

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0 of 0 found this helpful

Makes The Job Easy

Karl from Fresno CA on 10/8/2013

2001 Mazda Tribute

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Not much to say. Makes the job easy.

Pros: Easy time saver.

Cons: none

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0 of 0 found this helpful

Wire Harness for 1993 Mazda Miata

SDA from Robertsdale, AL on 9/8/2013

1993 Mazda Miata

Verified customer (What's this?)
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Works!

Pros: Easy Install

Cons: No Cons

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0 of 0 found this helpful

Wire harness

Mike B. from Lake Orion MI 48362 on 8/11/2013

1995 Mazda RX7

Verified customer (What's this?)
Verified employee purchase (What's this?)

This is a must have if you are installing a new sound system, it makes the installation cleaner and less likely to give you problems down the road.

Pros: Easy plug and play, only a few wires to connect, then the whole harness looks like a factory install, and is reliable as one.

Cons: I can't think of one thing negative to say about this product.

Crutchfield response on

1 of 1 found this helpful

Matching Harness

L.Lee from Norfolk VA on 7/30/2013

2003 Ford Escort ZX2

Verified customer (What's this?)
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This harness matched the factory harness in my wife's 2003 Ford ZX2. All I had to do was solder this harness to the HU harness that I purchased. All wires were color-coded which made soldering a cinch.

Pros: This harness "made my day" to a perfect connection and installation.

Cons: None

Crutchfield response on

0 of 0 found this helpful

Very useful item.

MP from Atlanta on 6/23/2013

Verified customer (What's this?)
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What is there to say, this harness adapter makes it very easy to install whatever receiver to your car's stock harness.

Pros: Great item to make the installation a breeze

Cons: none

Crutchfield response on

0 of 0 found this helpful

Metra 70-7901 Receiver Wiring Harness

Crutchfield customer from Newnan,GA on 6/21/2013

1999 Mazda 626

Verified customer (What's this?)
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Fit perfectly and easy to install

Pros:

Cons:

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0 of 0 found this helpful

Very nice

Peru from GA on 5/22/2013

1990 Mazda Miata

Verified customer (What's this?)
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This harness was well documented and works like a charm.

Pros: documentation, function

Cons: none

Crutchfield response on

0 of 0 found this helpful

Receiver Wire Harness

Mike M from Ocala FL on 4/21/2013

1999 Mazda Protege

Verified customer (What's this?)
Verified employee purchase (What's this?)

Looked all over for this wiring harness and Crutchfeild was the only place that had it in stock and at half the price. Harness fit perfect and the receiver is good to go.

Pros:

Cons:

Crutchfield response on

0 of 0 found this helpful

Metra 70-7901 Receiver Wiring Harness

Rick W from St. Louis, Mo. on 3/8/2013

1990 Mazda MX6

Verified customer (What's this?)
Verified employee purchase (What's this?)

None of the plugs fit.

Pros:

Cons:

Crutchfield response on 3/11/2013
We forwarded this review to our Technical Support team for follow-up. Lifetime tech support comes with every Crutchfield purchase.

0 of 0 found this helpful

Mostly great

Todd K from Colorado Spgs, CO on 2/20/2013

2000 Mazda MPV

Verified customer (What's this?)
Verified employee purchase (What's this?)

Easy to match wires from receiver to harness with one exception. Harness did not have a lead for the factory subwoofer. I had to wire the receiver lead to the factory lead and bypass the harness.

Pros: Easy to match wires

Cons: Missing subwoofer lead on harness

Crutchfield response on

2 of 2 found this helpful

Metra 70-7901 Receiver Wiring Harness

Matt from Knoxville, TN on 2/13/2013

2000 Mazda Millenia

Verified customer (What's this?)
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Exact!

Pros: Exact fit

Cons: Ground wire could had been twice the size for easier installation.

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0 of 0 found this helpful

Love the wiring harness

Roger from Kenmore, WA on 1/19/2013

Verified customer (What's this?)
Verified employee purchase (What's this?)

Using this wiring harness, I was able to install the new car stereo with NO cutting into the factory wiring harness. Preserving the factory wiring is important to me, and this wiring harness allowed me to easily install the stereo and achieve all the functionality of the unit. I am very happy!

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1 of 1 found this helpful

Metra 70-7901 Receiver Wiring Harness

JimJ from Seattle, WA on 8/17/2012

Verified customer (What's this?)
Verified employee purchase (What's this?)

Great product. Makes installing/replacing the stereo a snap!

Pros:

Cons:

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0 of 0 found this helpful

Metra 70-7901 Receiver Wiring Harness

Crutchfield customer from Ann Arbor, MI on 5/22/2012

1994 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

Instructions were fine, leads were plenty long enough, and the connector fit. Can't really ask for more here.

Pros: Leads long enough Instructions were helpful Good connector

Cons: No specifics on dimmer functionality, but apparently the Miatas dimmer signal is inverted, so may not even work. May try it out in the future, but not really necessary.

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0 of 0 found this helpful

Great harness

ptwat from Atlanta, GA on 5/21/2012

1991 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

These harnesses make the install sooo much easier!

Pros: Works great

Cons: Some wires are not connected on the car side of the connector making the harness side wire useless.

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0 of 0 found this helpful

wire harness

David from MD on 4/28/2012

2003 Ford Escort ZX2

Verified customer (What's this?)
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Did not fit my 2003 ZX2

Pros:

Cons:

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0 of 1 found this helpful

Wiring Harness

HRColey from Oxford, AL on 3/30/2012

1994 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

Worked great, especially considering I'm a rank amatuer.

Pros: Easy to use.

Cons: None

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0 of 0 found this helpful

Receiver Wire Harness

Jorge from San Bernardino, CA on 2/23/2012

1991 Mazda MX6

Verified customer (What's this?)
Verified employee purchase (What's this?)

Fit Nicely to my car wire harness!

Pros: It was free with my receiver!

Cons: None!

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0 of 0 found this helpful

Matched up perfectly

Bill K-B from Chicago on 2/2/2012

2000 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

Perfect. Just what I needed to make the job easy.

Pros:

Cons:

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0 of 0 found this helpful

Perfect

paulw from Chino Valley Arizona on 11/13/2011

2001 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

Over great value. I highly recommend Crutchfield integration harnesses.

Pros: Wires matched new radio color for color. Couldn't have been easier. Made for a professional installation.

Cons: Nothing.

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0 of 0 found this helpful

Good

DW1951 from san clemente, ca on 10/9/2011

1994 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

Everything it needs to be, nothing more, nothing less.

Pros:

Cons:

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0 of 0 found this helpful

Metra 70-7901 Receiver Wiring Harness

Justin H from Rome, GA on 8/7/2011

1996 Mazda Protege

Verified customer (What's this?)
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Works great. Mated to the factory harness perfectly and gives you extra room (because of the increased wire length) to handle the receiver when installing and removing.

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0 of 0 found this helpful

Works for 1990 miata

JohnR from Huntsville, AL on 5/29/2011

1990 Mazda Miata

Verified customer (What's this?)
Verified employee purchase (What's this?)

Bought the wiring harness for my 1990 mazda miata with the kenwood kdc-108. Color code on wires match. Needed some wrie strippers and a solder gun. 20 minutes at a table with the solder and i had a nice clean connection that mated with the factory connectors. well worth the money.

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0 of 0 found this helpful

Sanity Under the Dash

MikeM from Edmond, OK on 5/18/2011

1990 Mazda Miata

Verified customer (What's this?)
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Wire colors match to the Sony unit's wire colors and makes for a simplified installation with tired eyes.

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Cons:

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0 of 0 found this helpful

Metra 70-7901 Receiver Wiring Harness

BenH from Virginia on 5/11/2011

2003 Ford Escort ZX2

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Works great in my 2003 Ford ZX2. Thanks crutchfield, couldn't find this harness anywhere else.

Pros:

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0 of 0 found this helpful

Big Help

DickG from Atlanta on 2/8/2011

1997 Mazda Miata

Verified customer (What's this?)
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It was the technical support and all the little "add-ons" like this wiring harness adapter that convinced me to pay a little more and purchase this radio from Crutchfield. I know I could have probably ordered the adapter somewhere else, but it was nice to know that I was getting everything I needed with one order, and not have to search around and take a chance that I was ordering the wrong thing. The adapter worked perfectly. It took a little time to do the soldering but once it was done all that was left was to snap the connectors to the radio and the car's wiring harness and I was done.

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Worked great

Johnny from Fayetteville NC on 1/24/2011

2000 Mazda MPV

Verified customer (What's this?)
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Only problem was 2 wires for the speakers were mislabeled in the diagram supplied with the harness. After I had connected all the other wires, I could easily figure out the problem and corrected the error. Other than that, It worked great.

Pros:

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0 of 0 found this helpful

Metra 70-7901 Receiver Wiring Harness

DanaH from Santa Rosa, CA on 11/24/2010

2000 Mazda 626

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quick and Easy hook-up. Great Product!

Pros:

Cons:

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0 of 0 found this helpful

Ford/Mazda Receiver Wire Harness

carl from portland, oregon on 10/1/2010

1999 Mazda Protege

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This was extremly useful to have and helped with the installation of the radio. The added instruction sheet was a benefit.

Pros:

Cons:

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0 of 0 found this helpful

OEM Wiring Harness For My 1995 Mazda MPV van

Kimberly from Thomasville, NC on 8/30/2010

1995 Mazda MPV

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Verified employee purchase (What's this?)

Talk about a no brainer! This harness was color matched to my existing factory wiring. I did not have to compromise my factory wiring harness to install my new JVC receiver. The color matching to my OEM radio wiring left no room for mistakes. I would recommend this to anyone thinking about doing the receiver upgrade to their 1995 Mazda MPV. Five stars!

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0 of 0 found this helpful

Mixup on correct harness for 03 MPV

JC from Buena Park CA on 8/6/2010

2003 Mazda MPV

Verified customer (What's this?)
Verified employee purchase (What's this?)

First of all, let me say that purchasing from Crutchfield has been an overall good experience. I ordered the head unit and the wiring harness came with it. This harness is not the right one. Please check your harness before ordering. For some MPV model year 2003, you must have the harness #70-7903(one big plug) instead of the 70-7901(Two plugs) I called the tech support and they insisted that the harness was correct and that I must have a MPV with a factory amplifer instead of just a stock unit. I tried to explain that I already pulled the panels off and there was no factory amplifier. I bought the car new and I know that I did not get the "special" audio system. I know what kind of system I have and I did not make a mistake. I have researched this by going to Mazda MPV groups and even found another reviewer on this page with the same problem. [Editor's Note: We apologize for the problems you experienced. We have confirmed that you are correct and have amended our database with the correct adapter. Also, 120707903 has been replaced with 120707904. Thank you for bringing this to our attention.]

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0 of 0 found this helpful

Check your model year +/- one year

whyde from Austin, TX on 7/1/2010

2003 Mazda MPV

Verified customer (What's this?)
Verified employee purchase (What's this?)

It turns out that my 2003 MPV was on the cusp of a model-year changeover where they switched to a different wiring harness. Compare the part numbers of the wiring harness of your model year with the part number of the previous and next model years to see whether you may require a different harness. However, the Crutchfield tech support was courteous, efficient, realized the error, and got me the part I really required. My only suggestion would be to automate the check for model year changes, with a note or warning to visually inspect the radio (if possible) and match the harness against the photo before ordering. This would require access to the instruction for factory radio removal prior to purchase, however, and is a chicken-and-egg problem. So, this was not the harness I required, but it arrived in good shape and (I assume) would have worked well if it matched the older year's radio. Still 5 stars because of customer service effectiveness. [Editor's Note: Thanks for bringing this to our attention. We have added additional qualifiers to our Auto Install Guide to catch this mid-year harness change, and avoid this problem in the future.]

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0 of 0 found this helpful

Thank You Crutchfield!

D.L. from Arizona on 1/20/2010

1990 Mazda MX5

Verified customer (What's this?)
Verified employee purchase (What's this?)

It was so wonderful to have the wiring harness and instructions included with my stereo purchase. It made it so much easier installing the stereo. And it comes with pre-stripped wires too! I had to do a touch of interpretation matching the harness wiring description to the stereo's description. The write up that came with the stereo wasn't as clear as the wiring harness' instructions. I am sure I could have called Crutchfield if I had any questions, though. :)

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0 of 0 found this helpful

Wiring Harness - 1999 Mazda Protege

Bill from St Paul, MN on 11/8/2009

1999 Mazda Protege

Verified customer (What's this?)
Verified employee purchase (What's this?)

Crutchfield's wiring harness and instructions for adapting a Kenwood KDC-MP342U to my 99 Mazda protege made for a straightforward installation process. My only suggestion is that the instructions be updated, and mention of the potential requirement for a ground connection, which is separate from the supplied wiring harness.

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Cons:

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0 of 0 found this helpful

Included with my radio?! Crutchfield you are the best.

Hessam from PA on 7/26/2009

1993 Mazda MX6

Verified customer (What's this?)
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I got this free with my headunit. Fit perfect. I had a question about a particular wire and customer service was there, patient, and had my answer. My car did have a ground harness which would have been nice to have gotten a male spade tab for but I figured it out. My car is a 1993 4 cylinder model MX6. There is a black wire with a small black plastic connector that you can slip a male spade tab connector into. I bought a small pack of these connectors and it works well.

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0 of 0 found this helpful

Excellent

Justin from Pa on 5/6/2009

1989 Mazda RX7

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Match up perfectly, Instructions were clear

Pros:

Cons:

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0 of 0 found this helpful

Crutchfield Does It Again

Jetmd1967 from Romulus, MI on 2/11/2009

2001 Mazda MPV

Verified customer (What's this?)
Verified employee purchase (What's this?)

Top notch product. This harness made my installation a breeze. I would never try to install a stereo without using a receiver wire harness. Most important if you sell your car and want to keep your after market stereo, just unplug and reinstall the factory stereo in a snap.

Pros:

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0 of 0 found this helpful

Stripped wires

femcadder from New Hampshire on 11/4/2008

1998 Mazda Protege

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Worked perfectly. Loved how the wires were pre-stripped!

Pros:

Cons:

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0 of 0 found this helpful

works great

vistabob from Vista, CA on 10/17/2008

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works great, clear instructions, who could ask for anything more?

Pros:

Cons:

Crutchfield response on

1 of 1 found this helpful

Metra 70-7901 Receiver Wiring Harness

Bill from KCMO on 9/15/2008

2000 Mazda MPV

Verified customer (What's this?)
Verified employee purchase (What's this?)

a breeze to use.

Pros:

Cons:

Crutchfield response on

1 of 1 found this helpful

Mazda Receiver Wire Harness

toydoctor from Memphis, TN on 9/8/2008

1994 Mazda MX3

Verified customer (What's this?)
Verified employee purchase (What's this?)

Gave the directions a quick read, slid shrink tube on wires, pulled off the already sliced insulation, soldered the wires and done. Very easy.

Pros:

Cons:

Crutchfield response on

3 of 3 found this helpful

Verified customer (What's this?)
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Pros:

Cons:

Crutchfield response

<< >>

More details on the Metra 70-7901 Receiver Wiring Harness

Stacey B.

Product Research

Features

Metra Wiring Harness: Metra 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 Metra 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 Metra 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 Metra 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:

(Power/Front Speaker Harness)

Wire Color Function
Red +12 Volt Accessory
Yellow +12 Volt Constant
Blue Power Antenna
Blue/White Amp Turn-On
Orange Illuimination
Empty (none)
White Left Front Speaker +
White/Black Left Front Speaker -
Gray Right Front Speaker +
Gray/Black Right Front Speaker -

(Rear Speaker Harness)      

Wire Color Function
Green Left Rear Speaker +
Green/Black Left Rear Speaker -
Violet Right Rear Speaker +
Violet/Black Right Rear Speaker -

No Ground Wire: This harness does not contain a ground wire. You will need to ground your aftermarket head unit directly to the vehicle's metal chassis.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Recommended by Crutchfield. Chose Crutchfield because of the great reputation [ Derek  Jul 11, 2019 ]
A
To ease installation. [ Richard  Mar 31, 2019 ]
A
Free. Part of the recommended installation kit. [ Ricky  Mar 26, 2019 ]
A
because i need to wire my stereo into my car. [ Daniel  Mar 04, 2019 ]
A
Needed for installation and they were free [ Lynn  Feb 08, 2019 ]
A
Cuz it was free [ bill  Jan 10, 2019 ]
A
To make installation easier [ Joseph  Nov 25, 2018 ]
A
The easiest way to do a professional installation job is with these connectors. [ William  Nov 13, 2018 ]
A
came free [ Robert  Oct 29, 2018 ]
A
Makes install easier and preserves the original factory harness [ Robert  Sep 05, 2018 ]
A
installation package [ Trevor  Aug 22, 2018 ]
A
makes the process much easier than hardwiring. [ Dennis  Jul 12, 2018 ]
A
In kit [ Richard  Jun 23, 2018 ]
A
Will make a custom harness myself, and was free [ Justin  May 21, 2018 ]
A
Ease of installation, turns a hard 4 hour job into an easy 30 minute job. [ Brian  Apr 21, 2018 ]
A
Free [ Daniel  Mar 16, 2018 ]
A
I didn't want to cut the stock wiring to install my new radio and it was free with the radio I ordered. [ John M.  Mar 16, 2018 ]
A
Install [ Brandon  Feb 27, 2018 ]
A
it show up by it self on order [ william  Feb 09, 2018 ]
A
While it's possible, connecting without the harness is a real pain. [ Ozzie  Dec 15, 2017 ]
A
necessary for connectivity to factory wiring. extremely convenient to be part of the radio unit. [ Margaret  Nov 08, 2017 ]
A
package [ Kurt  Nov 05, 2017 ]
A
is easy to connect [ Jose  Aug 31, 2017 ]
A
Provides easy plug and play for my new radio into the factory harness. [ Rodney  Jul 13, 2017 ]
A
Paying the extra 15 dollars to have the wiring harness set up by the Crutchfield team was well worth the money! [ Peter  Jul 03, 2017 ]
A
makes wiring up your radio a snap [ wes  Jun 28, 2017 ]
A
I chose this product because its the specific item I need to add rear speakers to my car. [ Phil  Jun 22, 2017 ]
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Because cutting and soldering inside that dashboard isn't as fun as when I was 16 [ Tyler  Jun 09, 2017 ]
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Required for installation. [ Parker  Mar 17, 2017 ]
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Used before. [ ANDRES  Mar 07, 2017 ]
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Because i don't want to cut the original wire harness of my car [ SAMUEL  Jan 22, 2017 ]
A
Recommended by Crutchfield [ Jeffrey  Nov 25, 2016 ]
A
To not cut the factory wires [ Esteban  Oct 16, 2016 ]
A
Makes installation a breeze [ Johnny  Sep 26, 2016 ]
A
Need to hook up stereo [ PETER  Sep 02, 2016 ]
A
More need than want. [ Pil  Aug 07, 2016 ]
A
ordered incorrect one originally [ Dan  Jul 31, 2016 ]
A
The wiring harness fit my 2000 Mazda Protege perfectly. It even had the same colored wires as the aftermarket receiver. [ Patrick  Jul 15, 2016 ]
A
Required and free [ Michael  Jun 30, 2016 ]
A
um, required for the radio. [ Kevin  Jun 24, 2016 ]
A
I chose this so that all I would have to do is snap the harness to my stereo, make a 15-30 min job, to a 5 second job. [ Samuel  May 07, 2016 ]
A
One of the Parts to make a Perfect Fit! Thank you Garrett! Garrett's Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=213 [ Bill  Apr 25, 2016 ]
A
No one locally carries this item. Got the run around looking for it everywhere. Should have visited Crutchfield first. Next time I will. Thanks CF! [ Stephen  Apr 24, 2016 ]
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Ease of install. [ Marks  Apr 14, 2016 ]
A
it was the choice add on. [ Jason  Mar 17, 2016 ]
A
It's the right fit and color codes... [ Aaron  Mar 07, 2016 ]
A
my older brother buys from crutchfield and always trusts there stuff so i figured id give it a try just hoping this is the right part i need and not much more. [ Wraith  Jan 31, 2016 ]
A
It makes installation so much easier and retains the integrity of the factory wiring harness. [ Paul  Dec 12, 2015 ]
A
The quality [ Donnie  Dec 06, 2015 ]
A
Needed it to install new headunit [ Peter  Dec 05, 2015 ]
SHOW MORESHOW LESS

2 questions already asked

Q
What gauge are the wires?
[ BAD  Jun 09, 2019 ]
1 answer
A
They do not list the gauge of the wire used. It is more than enough for the application in a vehicle's electrical system. I'f I had to take a guess, I'd say between 16 and 20 gauge.
[ Calvin  Jun 20, 2019 ]  Staff
Q
What is the relay in the easy connection for on a 2003 Ford escort?
[ Dennis  Apr 28, 2017 ]
1 answer
A
For specific wiring/installation questions, you would be better served contacting an Advisor directly by phone (1-800-324-9695) or online chat. They can offer more detailed information to help better answer your questions.
[ Larry  May 02, 2017 ]  Staff

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