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Metra 70-2001 Receiver Wiring Harness

Connect a new car stereo in select 1994-09 Buick, Cadillac, and Oldsmobile vehicles

54 Reviews | 1 question - 1 answer

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Item # 120702001

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

Metra 70-2001 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.


  • 12V constant power
  • 12V switched power
  • chassis ground
  • factory amp shield ground (connect to receiver chassis if engine noise is heard)
  • power antenna turn-on
  • factory amplifier turn-on
  • dimmer
  • left front speaker +/-
  • right front speaker +/-
  • left rear speaker +/-
  • right rear speaker +/-

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

Great fit all wires hooked up. Went right into original. Great job

mike, Michigan

What's in the Box:

  • Receiver wiring harness

Metra 70-2001 Receiver Wiring Harness Reviews

Average Customer Review(s):

(54 Reviews)
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Hands-on research

Product Research

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 SWIC adapter is required & sold separately.

Wire Code Chart:

Wire Color Function
Red +12 Volt Accessory
Yellow +12 Volt Constant
Black Ground
Blue Power Antenna
Orange Dimmer
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.

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 verify what’s in the box, 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.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Ease of installation. Period. [ Barbara  May 13, 2017 ]
Simplifies installation of aftermarket radio. [ C  Apr 28, 2017 ]
had to in order to install my new setup [ Nathan  Mar 20, 2017 ]
Showed needed to fit 1996 LSS Oldmobile [ Michael D.  Jan 29, 2017 ]
Make sure my stereo installation go smoothly. [ Donald  Jan 20, 2017 ]
need it [ kevin  Jan 13, 2017 ]
Was recommended by you. Easier to install into Truck and leave factory harness intact. [ Casey  Jan 03, 2017 ]
needed them and they all make it much easier to do. [ Andrew  Dec 12, 2016 ]
for ease of installation [ Loren  Nov 29, 2016 ]
It is needed to make connection to the factory wiring easy [ Damario  Oct 28, 2016 ]
Part of install kit [ Ron  Oct 26, 2016 ]
Don't have to hack factory harness. Makes it plug and play, [ Keoki  Oct 20, 2016 ]
comes with the stereo ordered free of charge [ Lisa  Oct 17, 2016 ]
The wiring harness was necessary to convert my vehicle harness to the new stereo. Part of the installation package necessary to install the new stereo. [ Gary  Oct 08, 2016 ]
best thing to do is what is recommended for new installation [ Bruce C.  Jul 01, 2016 ]
makes installation easier [ MARIA  Jun 14, 2016 ]
needed to install my 2DIN in my 2002 Regal GS [ CHRIS  May 26, 2016 ]
part for my new radio to fit my car [ Chase  May 22, 2016 ]
To make my life easier [ Frank  May 09, 2016 ]
For a quick and clean installation [ Victor  Apr 04, 2016 ]
Crutchfield is a no-brainer when they include free wiring harnesses!! [ John  Mar 12, 2016 ]
This was include in the gear to complete the installation. than to Crutchfield for including it!! [ Michael  Jan 09, 2016 ]
Because I'm wiring in a aftermarket sterio that my sister's boy friend gave to me [ Ben  Dec 06, 2015 ]

1 question already asked

The ability to retain steering wheel controls with aftermarket receivers will be determined by the receiver you are using and the vehicle you have. For full information on this type of integration (including the parts you will need) please contact an Advisor by phone (1-800-324-9695) or online chat. [ Krissy  Apr 22, 2014 ]  Staff

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