Metra 70-2102 Receiver Wiring Harness

Connect a new car stereo in select 2004-05 Saturn vehicles

Item #: 120702102

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18 Reviews

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Metra 70-2102 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.

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

Hands-on research

What's in the box?

Download owner's manual

  • Power/Speaker harness
  • Instructions

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 & sold separately.

Wire Code Chart:

(Power/Speaker Harness)

Wire Color Function
Yellow +12 Volt Constant
Red +12 Volt Accessory
Orange Illumination
Orange/White Dimmer
Black Ground
Blue/White Power Antenna
Green Left Rear Speaker +
Green/Black Left Rear Speaker -
Violet Right Rear Speaker +
Violet/Black Right Rear Speaker -
Gray Right Front Speaker +
Gray/Black Right Front Speaker -
White Left Front Speaker +
White/Black Left Front Speaker -

The Crutchfield Car Selector: Please visit the Crutchfield Car Selector for your specific 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.

Metra 70-2102 Receiver Wiring Harness Reviews

Average Customer Review:

18 reviews
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Metra 70-2102 Receiver Wiring Harness

Written By Anonymous, Niles, MI on Sunday, December 07, 2014

Crutchfield Customer Review (What's this?)

Makes install a breeze.

great product

Written By kenny, manning,sc on Tuesday, July 08, 2014

Crutchfield Customer Review (What's this?)

Easy to install on 04 Saturn ion3 just remember to hook up the amp wire so speaker would work .

Pros: Easy color code for wire

Cons: none

Metra 70-2102 Receiver Wiring Harness

Written By Anonymous, Fairfax, VA on Wednesday, June 11, 2014

Crutchfield Customer Review (What's this?)

Should include wire nuts

It worked

Written By A L, Detroit, MI on Saturday, March 22, 2014

Crutchfield Customer Review (What's this?)

It had every wire I needed. The wires were a thicker gauge than the harness on the radio I bought, so they should be more than capable of handling any loads they'll ever see.

Pros: Good wire Fits well

Cons: None

Easy install with this harness

Written By DJ, Amarillo, TX on Saturday, January 18, 2014

Crutchfield Customer Review (What's this?)

This harness was very easy to splice into the Kenwood radio harness. Everything color coded and documented well. No issues and worked very well.

Pros: simple to do and we'll documented

Cons: None

Wire Harness for Saturn

Written By Greg, Warwick, RI on Monday, January 06, 2014

Crutchfield Customer Review (What's this?)

This harness made the installation a piece of cake! Easy to follow guide, everything installed quickly with no issues.

Pros: easy install, easy directions.

Cons: none

Quick & easy

Written By Jeremy, Lexington on Monday, November 25, 2013

Crutchfield Customer Review (What's this?)

Every site I was on showed two or three different harnesses. Crutchfield only had one, the right one. That made me feel comfortable to use them. Now, I have better sounding tunes in my car.

Pros: Everything

Cons: Nothing

Metra 70-2102 Receiver Wiring Harness

Written By Anonymous, Geneva, Ohio on Monday, October 28, 2013

Crutchfield Customer Review (What's this?)

Great fit and finish, works perfectly

Metra 70-2102 Receiver Wiring Harness

Written By Anonymous, Altoona, IA on Saturday, September 28, 2013

Crutchfield Customer Review (What's this?)

Fits perfectly and is necessary

Good Harness

Written By Todd B., Brownsville, KY on Wednesday, September 11, 2013

Crutchfield Customer Review (What's this?)

Worked pefectly hooking up a JVC deck to a 2005 saturn ion.

Pros: Good Quality

Cons: None

Saturn Receiver Wire Harness

Written By SCOTTS, ST. PETERS, MO on Wednesday, May 29, 2013

Crutchfield Customer Review (What's this?)


Pros: perfect fit, colors match

Cons: NONE

Metra 70-2102 Receiver Wiring Harness

Written By MarionM, Kansas City, MO on Monday, April 15, 2013

Crutchfield Customer Review (What's this?)

Wiring harness worked like a charm. There were a couple of extra wires that I did not need for my particular installation, that I was a bit nervous about, but a quick call to the Crutchfield help line cleared everything up and they were absolutely correct. I would also recommend the Posix connectors to anyone connecting one of these harnesses to your aftermarket stereo. They made good solid connections while taking up little space.

Saturn Receiver Wire Harness

Written By JJS, Lake Zurich, IL on Monday, January 21, 2013

Crutchfield Customer Review (What's this?)

Just what I needed and shipped quickly!

doesn't get any easier than this

Written By dross, akron OH on Saturday, December 29, 2012

Crutchfield Customer Review (What's this?)

not only does this harness fit properly, but the wire colors were an exact match for the JVC adapter on the head unit. easiest install I've ever done. protip: splice the harnesses together before plugging them in. that way you're not trying to splice wires in the dash.

Pros: perfect fit, colors match

Cons: none

Winner, winner, chicken dinner.

Written By Anonymous, Isanti, Mn on Monday, April 05, 2010

Crutchfield Customer Review (What's this?)

worked like a charm.

However, I had to hook up the external amp wire. I guess because my Ion has a 6 speaker system, it has an external amp. The tech help line gave me the info and i had it running in 2 minutes.

kudos to the help line.

Review for a wire harness?

Written By Dan, Dan, Faribault, MN on Sunday, February 22, 2009

Crutchfield Customer Review (What's this?)

Hah, a review for a wire harness seems comical, but this wire harness was definitely champion material for my '05 ION 2. And by champion material I mean that it was easy to hook up and it works.

Metra 70-2102 Receiver Wiring Harness

Written By Raymond, Foster City, CA on Wednesday, November 05, 2008

Crutchfield Customer Review (What's this?)

What is there to say? This made installing my receiver a snap. The harness was a prefect replacement for the stock one.

Piece Of Cake!

Written By Mark, Rochester, NY on Thursday, October 11, 2007

Crutchfield Customer Review (What's this?)

This wiring harness made it extremely easy to wire up my AIWA CDC-MP3 unit to my existing 2004 Ion2 Wiring. Great product and great instructions made this a extremely easy.

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