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Metra 70-2105 Receiver Wiring Harness

Connect a new car stereo in select 2007-11 Chevrolet and Pontiac vehicles

22 Reviews | 1 question - 1 answer

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

Metra 70-2105 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 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. 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.

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.

The wiring was PERFECT! I did choose to move the power wire on my original harness because my Pontiac Vibe is technically a Toyota and not a GM, but they do supply an easier alternative (long power wire that fits into the fuse compartment).

Darby, Rensselaer, In

What's in the Box:

  • Receiver wiring harness
  • 42" Red wire (with female quick slide on one end)
  • Fuse tap (with male quick slide)

Metra 70-2105 Receiver Wiring Harness Reviews

Average Customer Review(s):

(22 Reviews)
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Hands-on research

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 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 and sold separately.

Wire Code Chart:

Wire Color Function
Red * +12 Volt Accessory
(used only in the 2007 Chevrolet Aveo)
Yellow +12 Volt Constant
Black Chassis Ground
Blue Power Antenna
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 additional 42" red wire included with the harness is used in all applicable vehicles except the 2007 Chevrolet Aveo. It must be run from the receiver to a 12 volt accessory wire or fuse to provide 12 volt switched power.

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?

Makes wiring easy & keeps the factory wires uncut. [ John  Mar 06, 2017 ]
Free [ Robert  Jan 24, 2017 ]
looks like almost same with the manufacturer connector [ wenceslao  Dec 23, 2016 ]
it fit the radio/cd/mp3 etc. player for my truck [ Dale  Oct 28, 2016 ]
comes for free with the head unit. [ Jeffrey  Mar 23, 2016 ]
Adapter for my specific vehicle [ Kim  Feb 06, 2016 ]

1 question already asked


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