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Metra 70-1785 Receiver Wiring Harness

Connect a new car stereo in select 1988-95 Volkswagen and Audi models

Item # 120701785

The Metra 70-1785 wiring harness makes connections between your new car stereo and your car's electrical system.

Find what Fits your car

The Metra 70-1785 wiring harness makes connections between your new car stereo and your car's electrical system.

Item # 120701785

In stock
C$34.99

About the Metra 70-1785 Receiver Wiring Harness

Metra 70-1785 Receiver Wiring Harness

The Metra 70-1785 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.

Metra 70-1785 Receiver Wiring Harness

The Metra 70-1785 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.

Once this harness is connected to your new stereo, you'll be able to plug right into your car's factory radio connector. In order to use your factory amplifier, you'll have to connect the RCA connectors on this harness to the preamp outputs on your new receiver – you'll want to pick a car stereo with at least two sets of preamp outputs (front and rear).

This harness makes installing your new stereo easier, and allows you to put the factory radio back if you sell your vehicle. A detailed instruction sheet comes with the harness. Please enter your vehicle information or call an Advisor at 1-888-955-6000 to find out if this adapter is compatible with your vehicle. Warranty: 60 days.

Installation Note: This harness uses your factory amplifier; your new receiver must have front and rear preamp outputs to connect this harness.

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.

READ LESS

What's in the box:

  • 7" Vehicle/radio harness
  • 11" RCA harness
  • 7" Blue/white wire lead
  • 7" Blue wire lead
MFR #70-1785

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More details on the Metra 70-1785 Receiver Wiring Harness

Stacey B.

Product Research

Features

Wiring Harness: This wiring harness prevents 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 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 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 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:

Vehicle/Radio Harness

Wire Color Function
Red +12 Volt Accessory
Yellow +12 Volt Constant
Black Chassis Ground
Blue/white Amp Turn-On
Orange/white 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 -

Preamp/RCA Harness

RCA Color Function
White Left Front Speaker Channel
Gray Right Front Speaker Channel
Green Left Rear Speaker Channel
Violet Right Rear Speaker Channel
Note: Your aftermarket head unit will need to be equipped with four preamp/RCA outputs.

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Customer Q&A

1 question already asked

Q
The instructions show to put the blue/white remote wire into pin5 of 16 pin harness but there is no pin diagram. Where is pin5?
[ Luke  Feb 24, 2015 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/.
[ Krissy  Feb 24, 2015 ]  Staff

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