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Metra 70-1781 Receiver Wire Harness

Connect a new car stereo in select 1981-95 Ford, Kia, Mazda, and Mercury vehicles

Item # 120701781

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 # 120701781

In stock

About the Metra 70-1781 Receiver Wire Harness

Metra 70-1781

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

Metra 70-1781

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 harness to the wires from your new stereo. If you don't know how to use a soldering iron, we recommend that you purchase some wire connectors that you'll use to attach this harness to your factory harness.

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. 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 (see Details for a list of connections). You will need a special adapter if you want your factory steering wheel audio controls to work with your new stereo.


What's in the box:

  • 6.5" Receiver constant power harness
  • 6.5" Receiver accessory power harness
  • 6.5" Receiver front speaker harness
  • 6.5" Receiver rear speaker harness
MFR #70-1781

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Crutchfield response

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More details on the Metra 70-1781 Receiver Wire Harness

Stacey B.
The Metra 70-1781 Receiver Wire Harness replaces these items:

Product Research


Wiring Harness: This wiring harness prevents 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 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 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 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 vehicles 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
Blue Amp Turn-On
Orange/White 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 -

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Customer Q&A

Crutchfield asked: Why did you buy this?
Didn't think I would need any additional equipment but wasn't sure. I'm a newbie. [ George  Jun 18, 2018 ]
was recomended [ chris  Feb 02, 2018 ]
To be able to install in my car. I have a Kenwood I bought from Crutchfield, but I wanted to upgrade for bluetooth and hd radio. [ Denis  Aug 11, 2017 ]
Free [ Mike  Jun 22, 2017 ]
It is handy to have so cutting stock wires isn't necessary [ Grant  Jan 26, 2017 ]
Get perfect fit and safety reasons [ Boni  Dec 18, 2016 ]
Good quality alternative to splicing wires (and potentially making a mistake). Simplifies installation/hook-up. [ Tom  Sep 24, 2016 ]
Ryan suggested it. I looked at it and it was just what I was looking for. Thanks Ryan! Ryan's Bio: [ P  May 26, 2016 ]
Required for easy installation ... [ Joseph  Apr 04, 2016 ]
Excelent price,product and service [ EDGAR  Jan 04, 2016 ]

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