Metra 70-1858 Receiver Wiring Harness

Connect a new car stereo in select 1985-2005 General Motors-built vehicles

Item #: 120701858

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378 Reviews | 2 questions - 2 answers

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Metra 70-1858 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.

Connections:

  • 12V constant power
  • 12V switched power
  • chassis ground
  • power antenna 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, 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

  • Receiver wiring harness
  • Instructions

Product Research

Features

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:

Wire Color Function
Red +12 Volt Accessory
Yellow +12 Volt Constant
Black Ground
Blue Power Antenna/Amp Turn-On
Empty (none)
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 open the box, verify contents, 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 70-1858 Receiver Wiring Harness Reviews

Average Customer Review:

378 reviews
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Perfect!

Written By Brian, California on Wednesday, December 17, 2014

Crutchfield Customer Review (What's this?)

Worked perfectly to adapt the stereo to the car. I was able to do all the wiring on the workbench, then just plug and play during the install of the head unit.

Pros: Perfect. Color matched wiring to the original made it easy to match to the new head unit.

You need this

Written By Derek, Pennsylvania on Tuesday, December 16, 2014

Crutchfield Customer Review (What's this?)

You need this

EZ

Written By ezmerf, Phoenix,AZ on Monday, December 15, 2014

Crutchfield Customer Review (What's this?)

Just match the colors.

Pros: EZ to do.

Metra 70-1858 Receiver Wiring Harness

Written By Anonymous, Auburn il on Thursday, December 11, 2014

Crutchfield Customer Review (What's this?)

Easy as easy gets

Metra 70-1858 Receiver Wiring Harness

Written By Chinoy, Illinois on Wednesday, November 26, 2014

AAAAAAA++++++++

Pros: AAAAAAA++++++++

Worked Great!

Written By Anonymous, Largo, FL on Thursday, November 20, 2014

Crutchfield Customer Review (What's this?)

Worked great, we had it up and running within 20 minutes

Metra 70-1858

Written By User, Ohio on Sunday, November 09, 2014

Crutchfield Customer Review (What's this?)

worked well, easy install with directions

Pros: Use a wire harness adapter and you won't need to cut any of the stock wiring

Metra 70-1858 Receiver Wiring Harness

Written By D. M., Cottonwood, AZ on Thursday, October 23, 2014

Crutchfield Customer Review (What's this?)

Excellent wiring harness! Took the guesswork out of wiring up my new Media Player.

Pros: Direct wire-up to my GM Car.

Metra 70-1858 Receiver Wiring Harness

Written By Anonymous, Elizabethton, Tn. on Sunday, October 19, 2014

Crutchfield Customer Review (What's this?)

Worked as intended.

Metra 70-1858 Receiver Wiring Harness

Written By Anonymous, Lebanon, PA on Wednesday, October 15, 2014

Crutchfield Customer Review (What's this?)

Direct fit. All colors match.

Simplifies Install

Written By Anonymous, Cincinnati, OH on Monday, October 13, 2014

Crutchfield Customer Review (What's this?)

I took this adapter and the one for my new head unit and soldered the matching wires together before dismantling the dash. The wires lined up perfectly with the head unit adapter. With the adapter I was able to take my dash apart, remove the old head unit, install the new head unit and put the dash back together in under 10 minutes.

Metra 70-1858 Receiver Wiring Harness

Written By Dennis M, Healdsburg, Ca. on Monday, October 06, 2014

Crutchfield Customer Review (What's this?)

works good once you figure out what way it plugs in. this plug can easily be flipped and inserted either way, which i found out the hard way. not going to go into details about splicing into the factory wiring incorrectly witch i thought was right. make sure you check the latch connection first. also check the small note at the bottom of the instructions for an extra wire that must be connected for factory amp.

Pros: diagram and colors are correct

Cons: easily reversible

Pioneer Deh-3600ub

Written By LHutton510, California on Sunday, October 05, 2014

Crutchfield Customer Review (What's this?)

All wires and colors of pioneer deck match perfectly. Used all except two Orange wires. Wires also pre spliced.

Pros: Matched perfectly Pre sliced wires

Cons: None

Great wire harness

Written By Bob, Zanesville. Ohio on Friday, October 03, 2014

Crutchfield Customer Review (What's this?)

The wiring harness worked perfectly.

Pros: Simple to use.

Cons: None.

adapter harness

Written By Jedediah, Pensacola area on Thursday, October 02, 2014

Crutchfield Customer Review (What's this?)

fit like a glove

Pros: easy install.. used butt connectors and it took about 10 minutes.

Cons: none

Makes stero installation relatively painless

Written By Anonymous, Gainesville, FL on Thursday, October 02, 2014

Crutchfield Customer Review (What's this?)

Makes installing a new head unit into my vehicle's existing harness relatively painless. I was able to make all but one of the connections from the comfort of my air conditioned workspace and only have to spend a few minutes outside plugging everything in.

Pros: Easy to use; prewired plug, allows reinstallation of OEM head unit with minimal fuss.

Does what its supposed to

Written By Nick S, Crown point, IN on Thursday, September 18, 2014

Crutchfield Customer Review (What's this?)

Great piece of equipment! Easy to use, and saves time

Pros: Makes install a snap

Cons: None

Just what I needed

Written By Anonymous, North Carolina on Wednesday, September 17, 2014

Crutchfield Customer Review (What's this?)

Perfect for me.

harness

Written By Brian G, Reno. NV on Thursday, September 11, 2014

Crutchfield Customer Review (What's this?)

Easy to splice and connect

Pros: Went right together

Cons: None

as advertised

Written By T N, Navarre FL on Wednesday, September 10, 2014

Crutchfield Customer Review (What's this?)

I purchased this as part of a kit to install my Clarion FZ 150. It was very easy to use. Match color for color, insert harness into radio, and turn it on.I don't think there could have been any easier way to do it.

Pros: value, extremely easy to use, no cons

Cons: None

Metra70-1858 receiver wiring harness

Written By Kevin, Olive Branch, Ms on Tuesday, September 09, 2014

Crutchfield Customer Review (What's this?)

Great product

Pros: High quality, simple to use.

Cons: None

Easy to use

Written By Zach, Idaho on Thursday, September 04, 2014

Crutchfield Customer Review (What's this?)

Loved having the cables with text on them describing what each should be. Color coding matched everything, but there were a couple more cables on this than my current car. Worked out great though

Pros: Text was helpful and color coding for dumb guys like me was great.

Cons: Wish it would have been connected to adjuster plug prior to being sent.

Put Sony radio into 2006 Silverado

Written By GregH, Pace, FL on Monday, September 01, 2014

Crutchfield Customer Review (What's this?)

Easily connected this radio to the factory harness. Can't beat Crutchfield service if you have questions!

Pros: Fast, color to color connections. Wires already pre-cut to allow easy access to inner stranded wires.

Cons: None.

Just as expected...great product.

Written By Ren, Cleveland Oh on Sunday, August 31, 2014

Crutchfield Customer Review (What's this?)

What can I say...it makes the job easier and quicker without cutting into my factory harness!

Pros: No harness cutting. Easy wiring.

Cons: Nothing I can think of.

Vehicle specific connectors

Written By Rdelin, Port orchard wa on Monday, August 25, 2014

Crutchfield Customer Review (What's this?)

The connectors are exactly what I was looking for a perfect match for my vehicle. I tried to find then locally without any success.

Pros: They work flawlessly.

Cons: None

Metra 70-1858 Receiver Wiring Harness

Written By Anonymous, Blythewood SC on Monday, August 11, 2014

Crutchfield Customer Review (What's this?)

Easiest ive ever used!

awesome

Written By Anonymous, waddell, az on Friday, August 08, 2014

Crutchfield Customer Review (What's this?)

The best part of Crutchfield it includes everything need for easy fast install.

Perfect

Written By Patrick, England AR on Monday, August 04, 2014

Crutchfield Customer Review (What's this?)

So easy a caveman could do it.

Pros: Simple, works perfect

Cons: none.

wiring

Written By Trotter661, Kansas City, Missouri on Sunday, August 03, 2014

Crutchfield Customer Review (What's this?)

Not a tangled up mess

Pros: Easy for installer

Cons: None

kenwood install

Written By Darren, MA. on Tuesday, July 29, 2014

Crutchfield Customer Review (What's this?)

quick and easy install

Pros: free with stereo

Cons: none

Metra 70-1858

Written By John, Dunkirk, MD on Monday, July 28, 2014

Crutchfield Customer Review (What's this?)

Easy installation

Pros: Installed as advertized

Cons: None

Big-time work saver!

Written By Keys Cuda, Florida Keys on Sunday, July 27, 2014

Crutchfield Customer Review (What's this?)

Get your wiring done in the AC at the workbench (or kitchen counter, or TV chair, or ...) rather than in the heat, contorting yourself to work under the dash. Made the most maddening part of the install (faulty factory radio to an Alpine) much simpler. First time I've used in adapter in maybe a half-dozen radio swaps. Now a must. Love it!

Pros: Converts factory wiring to radio connection easily. A big work saver!

Cons: Hardest part of this part of install was stripping the wire ends on the adapter.

This is the only adapter you should use

Written By MrMike, San Antonio, TX on Sunday, July 13, 2014

Crutchfield Customer Review (What's this?)

This was the easiest install that I ever did. Just crimp or solder to your new radio harness and plug in the OEM wiring plugs.

Pros: Easy Easy Easy and fast.

Cons: none

Metra 70-1858 Receiver Wiring Harness

Written By Anonymous, Arizona on Thursday, July 10, 2014

Crutchfield Customer Review (What's this?)

fit great

Pros: MAde it easy to install

Wiring harness

Written By Goose, Kansas on Tuesday, July 08, 2014

Crutchfield Customer Review (What's this?)

Intuitive. No problem.

Pros: All color coded-simple

Cons: Instructions wouldn't hurt just to be sure you're doing it right.

works

Written By jeff, brodheadsville pa on Tuesday, July 08, 2014

Crutchfield Customer Review (What's this?)

A must have for aftermarket stereo

Pros: Free

Metra 70-1858 Receiver Wiring Harness

Written By Anonymous, Kill Devil Hills, NC on Sunday, July 06, 2014

Crutchfield Customer Review (What's this?)

works like a charm. Fit like a glove.

Very easy to install and instructions were Great!

Written By Mike S, Texas on Thursday, July 03, 2014

Crutchfield Customer Review (What's this?)

I used this harness on both the Clarion unit I bought originally and the second JVC unit. I had plenty of cable on this harness to remove the soldering and even cut some off as needed. Very easy to understand instructions and had no issues with the installation. Quality Product.

Pros: plenty of cable length easy color codes with labeling

Cons: No Cons

Blue and blue/white wires reversed

Written By Razor, Philadelphia, PA on Monday, June 30, 2014

Crutchfield Customer Review (What's this?)

Great product, except the blue and blue/white wires are reversed - not sure if that's the harness manufacturer or Alpine's error. The only output to the speakers was from the tuner. After racking my brain, I called Alpine and immediately the rep said "swap the blue and Blue/white wires and that will fix your problem." He was right, but there was no documentation included with the harness or stereo. If I hadn't called Alpine, who knows how long I would have continued to troubleshoot - especially since everything had been connected properly according to color codes!

Pros: Except for reversed wires, it's a good harness.

Cons: NO documentation was included with the harness or stereo to let you know that the blue and blue/white wires were reversed during the manufacturing process.

Metra 70-1858 Receiver Wiring Harness

Written By beau, slc ut on Saturday, June 28, 2014

Crutchfield Customer Review (What's this?)

Works great, easy to install

Pros: Match 2000 chevy silverado good

Cons: None

Put it in the instructions

Written By TC, Tampa, FL on Thursday, June 19, 2014

I would have given a higher rating, but after spending hours troubleshooting a no audio problem I contacted tech support. They immediately said that on a Kenwood , in a GM product the blue wire on the GM plug needs to be connected to the blue/white on the Kenwood plug to get audio. Since known, why isn't included in the installation instructions.

Pros: Fits perfectly

Cons: crimp connectors should be included for those that can't solder.

Metra 70-1858 Receiver Wiring Harness

Written By Anonymous, Atlanta on Wednesday, June 18, 2014

Crutchfield Customer Review (What's this?)

Critical for stereo success. Easy to connect.

THIS IS THE KEY TO THE CITY

Written By TONY, HOUSTON, TX on Monday, June 16, 2014

Crutchfield Customer Review (What's this?)

This piece makes all the difference when hooking up new to old. This is a got to have piece

Pros: make wiring your radio a snap!

Cons: nothing bad about this piece

Wiring Harness

Written By LRPLOWBOY, Little Rock, AR on Monday, June 16, 2014

Crutchfield Customer Review (What's this?)

The wiring harness was couldn't have been any easier to install

Pros: Labels on the wiring

Worked perfect

Written By Drew M., Florida on Wednesday, June 11, 2014

Crutchfield Customer Review (What's this?)

Labeled perfectly to match factory harness

Pros: Easy install

Cons: None

exact harness :-)

Written By Nicole, Houston, TX on Wednesday, June 11, 2014

Crutchfield Customer Review (What's this?)

Exactly the one I needed

Pros: perfect fit

Cons: None

Good wiring harness

Written By E.N., New Alexandria Pa on Sunday, June 08, 2014

Crutchfield Customer Review (What's this?)

Nice easy product to use

Pros: ease of use

Cons: none

Harness

Written By ALC, 30107 on Monday, June 02, 2014

Crutchfield Customer Review (What's this?)

The greatest !!

Pros: Exact match

Cons: the purple wire with purple darker line was difficult to distinguish.

Metra 70-1858 Receiver Wire Harness

Written By ScotM, IL on Wednesday, May 28, 2014

Crutchfield Customer Review (What's this?)

Worked fine

Pros: Worked fine

Cons: none

Metra 70-1858 Receiver Wiring Harness

Written By Anonymous, Yadkineville,NC on Sunday, May 25, 2014

Crutchfield Customer Review (What's this?)

Very easy just strip the wires and I used a crimp type conector and they work fine

Pros: Easy set up, color coded and instructions are great

Cons: None

Easy

Written By Rwilson, Sioux Falls, SD on Tuesday, May 20, 2014

Crutchfield Customer Review (What's this?)

Made install a breeze

Pros: Ease

Cons: None

Nice harness

Written By BradR, Albuquerque,NM on Tuesday, May 20, 2014

Crutchfield Customer Review (What's this?)

Came with Crutchfield's awesome free install package when I bought my receiver. Some solder and heat shrink and I had this thing going in a few minutes. Like the pre-stripped wires.

Pros: Easy instructions, good quality

Metra 70-1858 Receiver Wiring Harness

Written By Anonymous, Carterville,IL on Wednesday, May 14, 2014

Crutchfield Customer Review (What's this?)

Part of the package, diagram included!

easy install

Written By Anonymous, Indiana on Monday, May 12, 2014

Crutchfield Customer Review (What's this?)

Makes installing an after market radio a breeze

Pros: Great instructions

Cons: None

Came with stereo from Crutchfield

Written By annamm318, Siler City, NC on Friday, May 09, 2014

Crutchfield Customer Review (What's this?)

Everything works great!

Terrific sound easy to install

Written By Anonymous, Terry on Wednesday, May 07, 2014

Crutchfield Customer Review (What's this?)

I like the unit I got before so much I just couldn't help but buy another one, it sounds great and was super easy to install

Pros: The sound quality is great the bass response is great the highs are terrific and it's loud enough for me to shut out the world and digging on my sounds

Cons: There are no columns

Works Great

Written By Skip, Ks on Wednesday, May 07, 2014

Crutchfield Customer Review (What's this?)

Worked great. Followed free instructions and I am very happy with the results

Pros: Easy installation

Simple

Written By Jed, Michigan on Wednesday, May 07, 2014

Crutchfield Customer Review (What's this?)