Metra 70-8405 Receiver Wiring Harness

Connect a new car stereo in select 1999-08 Chevrolet, Daewoo, and Suzuki vehicles

Item #: 120708405

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22 Reviews

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Metra 70-8405 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
  • power antenna turn-on
  • amplifier turn-on
  • illumination
  • 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, then check here for a list of parts. You can also call an Advisor for more information.

Metra 70-8405 Receiver Wiring Harness Reviews

Average Customer Review:

22 reviews
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Metra Suzuki wiring adapter

Written By DMW, New Jersey on Friday, February 06, 2015

Crutchfield Customer Review (What's this?)

Worked well in our Suzuki Verona. Spliced, soldered, and heat shrunk the wires to the radio wiring. Had the perfect amount of wire to make hooking up & stowing the small amount of extra wire in the dash. Easy too follow directions, & everything works as its supposed to.

Pros: It fits the factory harness, easy to follow directions, and everything worked.

Cons: It didn't install itself?

Easy to use harness

Written By StreetRacerMX5, York. Pa on Monday, November 03, 2014

Crutchfield Customer Review (What's this?)

Easy to use harness.No issues or complications.Colors coded properly.

Pros: Colors match up well

Cons: none

Fit my 2005 chevy aveo

Written By Jason, Hyannis Ma on Wednesday, October 22, 2014

Crutchfield Customer Review (What's this?)

Fit my 2005 chevy aveo

Pros: Fits my 2005 chevy aveo very easy to install

Cons: None

My awesome piece of equipment

Written By Austin Cori Gaekle, FL on Monday, June 30, 2014

Crutchfield Customer Review (What's this?)

I was looking everywhere for this piece and couldn't ever find it till I got on here. It works perfect and I finally have a radio.

Pros: It works and was very simple

Cons: Didn't find and bad things

Wire Harness

Written By TRAINWRECK, ALLIANCE,OH on Wednesday, June 11, 2014

Crutchfield Customer Review (What's this?)

Easy to install. Worked great.

Pros: Good fit East to install.

Just what I needed.

Written By DJ, Tulsa, OK on Tuesday, May 13, 2014

Crutchfield Customer Review (What's this?)

Just as advertised. Perfect for the car and unit.

Metra 70-8405 Receiver Wiring Harness

Written By Tom C., Chicago on Wednesday, March 26, 2014

Crutchfield Customer Review (What's this?)

Really easy to use, a lot easier than expected. I am never a fan of wiring anything, but this was so simple that I'd do it myself, again.

Pros: Everything

Cons: Nothing

Aveo wire harness

Written By Bob, Harrisonburg on Tuesday, October 01, 2013

Crutchfield Customer Review (What's this?)

Pigtail connected firmly and stayed connected

Pros: Wires were easy to strip and hooked up to cdplayer flawlessly.

Cons: None

2004 Aveo install

Written By TerryG, Columbus, Ohio on Tuesday, July 16, 2013

Crutchfield Customer Review (What's this?)

Awesome kit. Made putting a new cd player in brothers car very easy .

Receiver Wire Harness

Written By jsdtech, South Jordan Utah on Monday, June 10, 2013

Crutchfield Customer Review (What's this?)

Good instructions and easy to install.

Pros: Good instructions and easy to install.

Cons: none

Receiver Wire Harness for Daewoo Leganza

Written By Leroy B, Columbus, Ga on Wednesday, May 08, 2013

Crutchfield Customer Review (What's this?)

Exact fit

Pros: Exact fit

Cons: none

Review Title

Written By Mr. Hill, Jersey Shore PA on Monday, April 15, 2013

Crutchfield Customer Review (What's this?)

simple to use, no need for instructions

Pros: takes all the worry out of wiring

Cons: none


Written By ashley, mo. on Friday, May 11, 2012

Crutchfield Customer Review (What's this?)

it works great an easy to install directions was perfect makes it so easy to install an aftermarket radio

Pros: easy

Cons: none

Metra 70-8405 Receiver Wiring Harness

Written By Tim S, Rochester, NY on Wednesday, April 04, 2012

Crutchfield Customer Review (What's this?)

Great time saver... the wires were stripped and ready to connect.

Good wire harness

Written By czechyour6, Central, UT on Thursday, February 23, 2012

Crutchfield Customer Review (What's this?)

colors not exact match to factory but they worked great!

Metra 70-8405 Receiver Wiring Harness

Written By Dave, Owasso, OK on Saturday, April 02, 2011

Crutchfield Customer Review (What's this?)

Would not install a new system without one of these. It's much easier to mate
up this connector with the one with your new system at the workbench than trying
to soldier and heatshrink things under a dash.

Metra 70-8405 Receiver Wiring Harness

Written By KAJ, MI on Sunday, January 30, 2011

Crutchfield Customer Review (What's this?)


Metra 70-8405 Receiver Wiring Harness

Written By Anonymous, Melbourne, Fl on Friday, January 28, 2011

Crutchfield Customer Review (What's this?)

Without the wiring harness, this would have been a pain to wire in. Soldered the wiring
harness to the radio's wires and everything worked when it was plugged in. The job
was a breeze! Thanks Crutchfield for providing a great product!


Written By Anonymous, Southern California on Wednesday, March 10, 2010

Crutchfield Customer Review (What's this?)

This Item was a perfect fit for my 2004 Chevy Aveo! It even had three extra wires that my basic stereo set-up didnt need, but if i had an amp and sub they would of been necessary. Everything just fit so perfect. Very easy to install with the directions Crutchfield supplied. A MUST BUY FOR A QUICK AND SIMPLE INSTALL!! had the wiring completed and ready to install in less then 10 min

Works perfectly.

Written By Bob, St. Paul, Minnesota on Monday, November 09, 2009

Crutchfield Customer Review (What's this?)

Works perfectly with my Lanos. Made the job of installing an upgraded stereo easy and professional.

2008 Aveo

Written By gspot, Cincinnati, OH on Thursday, December 25, 2008

I got this with my stereo order for my 2008 Chevy Aveo hatchback. Was
easy to install, instructions were easy to follow. After reading instructions,
it took me about 25 minutes to make all the connections, it was just
amazingly easy to do. Also the instructions told me exactly how to remove
the factory stereo, it was truly a breeze. I did the wire harness in the
house, spent about 20 minutes total in the car, I'm talking taking the old
radio out and installing the new one. Don't be intimidated, this was EASY!

time saver

Written By piston55, Houston Tx on Sunday, September 07, 2008

Crutchfield Customer Review (What's this?)

I am glad this was provided free it made connection easy and fit the harness from the factory radio.

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/Front Speaker Harness)

Wire Color Function
Yellow +12 Volt Constant
Red +12 Volt Accessory
Orange Illumination
Black Ground
Blue Power Antenna
Blue/White Amplifier Turn-on
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.

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