Contact us
Close contact box
Connect ID #
315 131 742 3

Our hours

Connect ID #
315 131 742 3
Chat
All finished with your chat session?

We’ll email you a transcript of this conversation for your records.

For simple questions about your order,
try our new virtual agent:

Please enter your name.  
Please enter a valid email address. Why is this required?
Please enter your US phone number.  

For Tech Support, call 1-888-292-2575

Thank you, !
Our conversation will be emailed to
Please enter a question  
Don't wait on hold. We'll call you back when it's your turn to talk with the next available .
Please enter your name  
Please enter your phone number  

Please enter a message  

Calls may be recorded for training and quality control purposes.

We are located in Virginia USA.

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...

California customers:
Please click here for your Proposition 65 warning.

Item # 120707901

In stock
$12.99

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

Loading reviews...

Metra 70-7901 Receiver Wiring Harness reviews

Average review:

101 reviews

Thanks for submitting your review

Filter by rating

Customer photos

Sort reviews

Sort by:
Items per page:
View page:

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

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.

Loading accessories...

Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Makes adapting between new and old wiring much easier [ Jeremy  Dec 27, 2019 ]
A
it was free [ Douglas  Dec 02, 2019 ]
A
Recommended by Crutchfield. Chose Crutchfield because of the great reputation [ Derek M  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 ]
A
Because cutting and soldering inside that dashboard isn't as fun as when I was 16 [ Tyler  Jun 09, 2017 ]
A
Required for installation. [ Parker  Mar 17, 2017 ]
A
Used before. [ ANDRES  Mar 07, 2017 ]
A
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 ]
A
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

Loading articles...

TOP