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Metra 70-2105 Receiver Wiring Harness

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

Item #: 120702105

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15 Reviews | Ask Questions

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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.

Metra 70-2105 Receiver Wiring Harness Reviews

Average Customer Review:

15 Reviews

Red wire challenges

Written by: DanK from Minnesota on June 14, 2015

Crutchfield Customer Review (What's this?)

The wiring harness works great. I knew when I bought it that the instructions require wiring the red wire to a different 12 volt source on the '09 Vibe. I wish I knew why. I would like to meet the person who can slide their head under the dash and slide a flimsy piece of copper into the side of the low profile mini fuse. Fortunately I found a fuse tap online that plugs into the accessory fuse and holds that fuse along with a new fuse for the radio. It would saved me a couple of hours of frustration had Crutchfield offered this accessory with clear instructions to plug it into the accessory fuse slot.

Pros: It's great to be able to solder and tape the wires together then just plug in the harness when installing the stereo.

Cons: Instructions for running the red wire to a 12 volt source could be easily improved.

wiring harness

Written by: Anonymous from albuqureque, nm on May 22, 2015

2010 Pontiac Vibe
Crutchfield Customer Review (What's this?)

This harness was great except for one wire. There are only 2 cars this harness work well with all of the others it requires you to run a wire to your fuse box or splice into another wire. A better alternative should be used or more instructions and better parts should be included for this.

Pros: Almost everything matchstick perfectly

Cons: One wire is a pain to run and not enough instruction is included

Seperate Amplifier Wiring

Written by: Truckin Van from Michigan on April 10, 2015

2009 Pontiac Vibe
Crutchfield Customer Review (What's this?)

Didn't show wiring required for separate amplifier on my car.



Great Value!

Written by: ACRPF from Chandler, AZ on November 9, 2014

2009 Pontiac Vibe
Crutchfield Customer Review (What's this?)

Receiver works great for the value. I needed a pretty basic receiver to replace my wife's car stereo. This certainly fit the bill and we're not disappointed. Has all the functions needed and an easy user interface.

Pros: Great value, solid performance

Cons: A little hard to read the display in direct sunlight.

Great harness

Written by: ralph0722 from Orlando, Florida on June 23, 2014

2011 Chevrolet Aveo5
Crutchfield Customer Review (What's this?)

Super easy to install in my Aveo5. Nice product.

Pros: Easy to install.

Cons: None.


Written by: markk110 from Osceola, WI on May 3, 2014

Crutchfield Customer Review (What's this?)

Plain harness. It doesn't allow you to interface for the steering wheel adapter, and requires a separate wire to connect to power. This not what I expect from a Crutchfield supplied harness. It could have power built in.

Pros: Limited functionality

Cons: Many

They know nothing

Written by: Photog from Englewood, FL on April 3, 2014

Crutchfield Customer Review (What's this?)

Perfect for what I needed , I went looking for same harness at the local big box store in Port Charlotte FL , and the sales man told me i needed a $150 harness or I would never get the radio to work , I told him that he must be wrong and thats outrageous but he insisted , needless to say , He was wrong.

Pros: Fits perfect , match wire for wire.

Cons: Non , The only con with this CAR is that you have to pull your own acc. wire from fuse box but thats the cars wiring not the conversion harness. The harness even comes with the acc. wire needed.

Aveo Wiring Harness

Written by: TechyinIdaho from Boise, ID on January 5, 2014

2011 Chevrolet Aveo
Crutchfield Customer Review (What's this?)

This wiring harness made installation super easy. I installed the Deck and four speakers in just about 2 hours start to finish. The hardest part was removing dash and door pieces carefully as not to break anything.

Pros: Perfect fit, easy because of color coding matched car.

Cons: Wire ends aren't stripped, so you have to strip them back yourself.

Upgrade from factory stereo

Written by: JustinH from Oliver springs, TN on November 12, 2013

2008 Chevrolet Aveo
Crutchfield Customer Review (What's this?)

I installed this unit into my wife's Chevy Aveo. It replaced the factory CD receiver and greatly improved the sound quality with the OEM speakers. The Pro EQ feature offers the flexibility to tweak the sound to your preference( especially handy when dealing with original speakers). Just added a 400 watt 2 channel amplifier (also a JVC product) for driving an Alpine type E 12" subwoofer. I am 100% satisfied with this product! Its relatively easy to use, comes with a remote and offers plenty of functions to customize your vehicle's sound system.

Pros: Price, sound quality, features and remote

Cons: none for this price range

Reciever wire harness

Written by: Edg from Lv nv on July 18, 2013

2011 Chevrolet Aveo
Crutchfield Customer Review (What's this?)

Exactly what was needed for 2011 Chevy Aveo. Easy install, just match the colors and connect! Hardest part was taking dash apart. Power wire not compatible with certain models. But separate power wire comes with harness.

Pros: Easy install. Very simple to follow colors of wires.

Cons: Separate power wire (comes with kit). You must connect to audio fuse in fuse block to get power, but spade needs to be filed down to fit into wire connector. Easy to do though.

Metra 70-2105 Receiver Wiring Harness

Written by: Anonymous from cullman,AL on June 27, 2013

2009 Pontiac Vibe
Crutchfield Customer Review (What's this?)

worked well

Pros: was easy to understand instructions

Cons: difficult to install


Written by: Richard from The Woodlands, TX on January 15, 2013

2008 Chevrolet Aveo
Crutchfield Customer Review (What's this?)

Easy to use, fit's right in, clear instructions



Works perfectly.

Written by: Jake A from Wilmington, NC on January 13, 2013

2011 Chevrolet Aveo5
Crutchfield Customer Review (What's this?)

It took me a long time to find a wire harness for my 2011 Chevy Aveo5 LT, and when I found this one I was afraid that it would not work. However, the harness works perfectly and even powers all 6 speakers in my car!

Pros: Works on all 6 speakers. Clear directions.

Cons: None.


Written by: jd from north canton oh on January 1, 2013

2009 Chevrolet Aveo
Crutchfield Customer Review (What's this?)

very simple to use and is marked very clearly as so theres no way you mess it up great item

Pros: easy to use

Cons: none

Metra 70-2105 Receiver Wiring Harness

Written by: Anonymous from Washougal, WA on May 18, 2012

2009 Chevrolet Aveo5
Crutchfield Customer Review (What's this?)

I like this harness adapter but the fuse splice you have to use is a larger spade than the supplied female on the harness!

Pros: Better than hacking apart your factory harness!

Cons: Did not come with correct connection for fuse!

Hands-on research

What's in the box?

Download owner's manual

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

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 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
Orange/White Dimmer
Orange 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 -

*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.

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.

Customer Q&A

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Adapter for my specific vehicle [ Kim  Feb 06, 2016 ]

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