Metra 70-1758 Receiver Wiring Harness

Connect a car stereo in select 1986-2005 European vehicles

Item #: 120701758

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Metra 70-1758 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.

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 and sold separately.

Wire Code Chart:

Wire Color Function
Red +12 Volt Accessory
Yellow* +12 Volt Constant
Black Chassis Ground
Blue Power Antenna/Amp Turn-On
Orange/White Dimmer
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 -

* If your vehicle does not have a switched 12 volt source for the receiver, you must either wire both the switched 12 volts and constant 12 volts of the receiver to the yellow wire on the adapter, or go to the fuse block for a 12 volt switched source.

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 70-1758 Receiver Wiring Harness Reviews

Average Customer Review:

35 reviews
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Metra 70-1758 Receiver Wiring Harness

Written By Drew, New Jersey on Saturday, December 20, 2014

Crutchfield Customer Review (What's this?)

Diagram and instructions were perfect. Worked first time.

Pros: Easy to connect to car and radio.

Cons: none

Customer service is the best!!

Written By Jd, Kirkland on Friday, September 19, 2014

Crutchfield Customer Review (What's this?)

Oh my. Crutchfield customer service is knowledgeable and incredibly helpful. I was blown away. This harness worked perfect on my 2000 e class wagon without Bose audio.

Pros: Customer service

Cons: Non

Good product

Written By Rob, Spring Hill, TN on Sunday, August 17, 2014

Crutchfield Customer Review (What's this?)

Good product. Does what it says...

Pros: Does what it says

Cons: none

Worked as described

Written By Ray, New Holland Pa on Monday, July 28, 2014

Crutchfield Customer Review (What's this?)

Very detailed info concerning hookup for my Jetta

Pros: easy to follow instructions

Sorry wrong product for my application

Written By saabsuperaero1, Butler, PA on Monday, April 21, 2014

Crutchfield Customer Review (What's this?)

I imagine that if it were the correct produce it would have worked. Looks great out of the package. Unfortunately, this was the second wrong product I bought due to an error by the Crutchfield fitment department. Don't trust it, know what your application is before purchasing.

Pros: Looks good out of the package.

Cons: Wrong product due to Crutchfield fitment guide.

Nice Wiring Harness!

Written By Harvey, Orem, UT on Wednesday, April 09, 2014

Crutchfield Customer Review (What's this?)

Excellent! I wired my car stereo ALL by myself! I showed it to a prof installation shop while checking on speaker wiring issues and they thought it was excellent! They asked me where I got the harness. I said Crutchfield. He then said that is where they got them as well!

Pros: Very easy just take your time, one wire at a time. Make sure to get the correct sized connectors and I added a small piece of electrical tape around each connector.

Cons: None

Wire Harness

Written By al, Sanrafael, Ca on Tuesday, March 18, 2014

Crutchfield Customer Review (What's this?)

I received the product on time, the sales person that helped me was very patient and knowledgeable. I told him I wish, I would know about them a long time ago. Their professional advice and support, anytime you need it,is matchless. I thank you and the wonderful staff.

Metra 70-1758 Receiver Wiring Harness

Written By RonM, Franklinville, NJ on Monday, March 17, 2014

Crutchfield Customer Review (What's this?)

Simple to use product.

Cons: none

Metra 70-1758 Receiver Wiring Harness

Written By geo j, watertown,ct on Thursday, October 24, 2013

Crutchfield Customer Review (What's this?)

perfect product

Pros: easy install

Cons: none

Great product

Written By Anonymous, Chalfont, PA on Sunday, September 08, 2013

Crutchfield Customer Review (What's this?)

It was perfect it fit great and works well! So hard to find for these model cars and they had it, also got here in 1 day!

PERFECT!!! Vanagon 91

Written By Paul N, Indian Orchard, MA on Sunday, August 04, 2013

Crutchfield Customer Review (What's this?)

Made installation a snap. Highly recommend the adapter. I used to hard wire in but this is perfect.

putting an aftermarket radio in a while 1996 saab.

Written By Thomas, New Haven, MI on Saturday, June 22, 2013

Crutchfield Customer Review (What's this?)

Thank you for this wire harness it made my job so much easier. I was ready to pay someone to do it for me until you told me about this wire harness. It was very easy to do with your help. Thanks for saving me $150.00, that I can now use to buy new speakers from you.

Pros: Everything

Cons: Nothing

Headache reducer

Written By Alex, Moline, Il. on Sunday, June 16, 2013

Crutchfield Customer Review (What's this?)

If you are lucky enough of having the factory wiring of the original stereo in your car, this harness is a headache reducer, it allowed me to connect a newer stereo without the mess. The instructions sheet included made it very easy to identify all wires.

Pros: Makes installation very easy and fast

Cons: It's useful only if your car has the original stereo warning, which is very rare.

Harness was perfect!

Written By MichaelE, Orlando,FL on Monday, April 15, 2013

Crutchfield Customer Review (What's this?)

Not a big DIYer but Crutchfield made it easier.... definately the right part, the perfect harness for a 97 Cabrio. Fit right into the already in there harnesses. They could include (and charge) for the end caps of connecting wires to wires but those were easy to get at local shop.

Pros: Perfectly the right harness to my Cabiro!

Cons: Could have included the end caps for connecting wires of the harness to the wires of my new stereo unit. Wires were not an exact "color" match but were close enough that I got it right.

Wire harness

Written By Gary, Holstein, Ia on Sunday, April 14, 2013

Crutchfield Customer Review (What's this?)

Did not work , I have the factory Harmon Kardon system and could not get my Dual HD radio to play.

Crutchfield response on Tuesday, April 16, 2013 We forwarded this review to our Technical Support team for follow-up. Lifetime tech support comes with every Crutchfield purchase.

Perfect wire harness

Written By S. Hunt, Bardstown, KY on Wednesday, November 14, 2012

Crutchfield Customer Review (What's this?)

This worked seamlessly with my VW. Made installation extremely easy.

Pros: Perfect fit and for my vehicle. Easy to connect to new head unit.

Cons: None.

almost but not quite...

Written By jim325ix, Newmarket NH on Tuesday, October 16, 2012

Crutchfield Customer Review (What's this?)

Good enough quality and I appreciate the effort, but it does not fit my car (1987 VW Scirocco 16V). The wiring colors were completely different. Being an antique, I was not surprised and just spliced into the harness as it had been cut in the past.Thanks anyways!

Pros: Probably workswell when it fits your application, no needto cut the harness connector off.

Cons: Didn't work on my vehicle.

Almost perfect

Written By Steve Y, Niantic, CT on Sunday, June 24, 2012

Crutchfield Customer Review (What's this?)

The only problem was I had to call 4 times to get the correct alternate wiring configuration for my car. But otherwise it was a Perfect fit.

Pros: Plugged right in

Cons: It just needed a little bit better way of saying some car might need to use alternate wires.

Metra 70-1758 Receiver Wiring Harness

Written By TommyG, San Jose on Tuesday, May 29, 2012

Crutchfield Customer Review (What's this?)

Makes things alot easier when you do it yourself :)

1994 Land Rover Defender D90

Written By RobM, Phoenix, AZ on Monday, May 21, 2012

Crutchfield Customer Review (What's this?)

A previous review stated that it didn't fit a 1995 Defender and I almost didn't purchase the harness. I can't speak for the '95 model year, but it fit my 1994 D90 perfectly once the amp was removed.

Works fine

Written By Lou, Italy on Monday, April 02, 2012

Crutchfield Customer Review (What's this?)

This works just fine. Not great but just fine. Before installing the head unit harness make sure all of the tabs are secure and the wires are not loose. Also, for those with factory amps, don't forget to connect the blue wire to the trigger

Pros: The wires are long enough

Cons: The directions barely cover the basics, completely missing out on some important details

Worked after some fiddling

Written By fch, Palo Alto on Tuesday, January 17, 2012

Crutchfield Customer Review (What's this?)

It worked as it is supposed to. However, it was noted that certain cars need to change the red and yellow wire. Mine needed that, but was not listed, so it took some trial and error.

Harness for 1997 SL Benz

Written By jack, Greencastle, PA on Thursday, November 10, 2011

This proved to be the missing link in an involved installation

Pros: Was able to get the radio working

Does not fit 95 Defender

Written By Anonymous, Meridian MS on Wednesday, July 06, 2011

Crutchfield Customer Review (What's this?)

the harness does not fit a 1995 land rover defender

Metra 70-1758 Receiver Wiring Harness

Written By Anonymous, Salem, NH on Sunday, April 17, 2011

Crutchfield Customer Review (What's this?)

Wire harness worked fine though the master sheet said I had to cut my
vehicles original harness into 2 pieces, good thing I didn't and checked to see
if it fit beforehand.

Plug and Play

Written By Alcetus, Spring Green Wi on Wednesday, February 02, 2011

Crutchfield Customer Review (What's this?)

Made my install go in minutes. I prewired my stereo plug to this one and it was as easy as
just plugging it in. It saved me hours of work.

1996 Saab 900 SE Factory Radio

Written By Al, New York, NY on Thursday, October 07, 2010

The instructions were clear and the harness was a match for my 1996 Saab 900 SE
fatctory radio.

Fits Lotus Exige

Written By Troop, NOVA, VA on Wednesday, June 30, 2010

Crutchfield Customer Review (What's this?)

This harness also fits the Lotus Elise/Exige 2005+ cars which use the VW DIN harness.

1990 VW corrado

Written By Igorek, CA on Wednesday, January 27, 2010

Crutchfield Customer Review (What's this?)

I contacted Crutchfield and told sales rep that the wire harness i need should be black and red connectors. Red connector was larger then a black connector. He said rest assured I will get you the right kit. And what do you know? I received a wrong kit.
I bought another wire harness kit locally and those guys will not replace it with the correct kit. At least Cratchfield is trying to replace it with the correct kit. Then again i cant say correct until i try it on my car.

worked great

Written By jason, Atglen, PA on Tuesday, February 17, 2009

Crutchfield Customer Review (What's this?)

I was very pleased with this product. I just matched the colors of the wires
with the wires from my radio, soldered them together and it worked. Thank
You Crutchfield for all the great things you offer!!

Easy!

Written By Michael, Attleboro, Ma on Saturday, February 07, 2009

Crutchfield Customer Review (What's this?)

Color coded wiring made connecting the harness kit foolproof. I really liked the fact that I could pre-wire the harness before bringing the radio out to the car. I just had to pop the old radio out. Plug the connectors in. and slide the new radio in place.

not for Harmon Kardon system

Written By David, Cape May County, NJ on Saturday, January 17, 2009

Crutchfield Customer Review (What's this?)

I specified that i had the HK factory system, and this does not work with it. instead, i had to take the speaker wires coming from the back of it and solder RCA's on them to plug into my aftermarket deck. using just the speaker wires will fry the factory amp.

wrong wiring harness!

Written By Brian, Portland, OR on Thursday, September 18, 2008

Crutchfield Customer Review (What's this?)

This harness was shipped with a JVC head unit. Unfortunately, it does NOT work with a 993 Porsche (1996) with the 8 speaker HI FI stereo option as it does not support the proper speaker connections.

Crutchfield had to ship another wiring harness which I had to modify to work.

Does what it is suppose to do

Written By Alexander, Northern Burbs, IL on Sunday, February 10, 2008

This harness was easy to hook up and the instructions were straight forward. Anyone who is uneasy about installing their new stereo themselves (like I was) rest assure that this harness made it so easy...I actually couldn't believe how easy it was. I stalled 2 stereos that I bought from Crutchfield with no issues and I knew that if I got stuck the Crutchfield Technical Support Advisors were there for me. This harness gets 4 out of 5 stars because the "Orange" (lighting) wire on one of the harness's was loose. I was able to get a small flathead screwdriver into the small wire connector space and "crimp" the wire back in, not ideal, but it has been working for a month. If it were not for the loose wire issue it would have received 5 stars.

Metra 70-1758 Receiver Wiring Harness

Written By Joe, Illinois on Wednesday, November 21, 2007

Easy to use, wires are pre cut at the ends, so there's no need for stripping. Wires are a quite bit longer than they really need to be, but I guess that's better than too short.

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