American International VWH-1004

Wire Harness to Connect an Aftermarket Stereo Receiver to Select 1987-2002 Volkswagen Vehicles


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When replacing your factory radio with an after-market car stereo, the VWH-1004 wire harness is a must for a quick and clean installation. It eliminates cutting your OE radio plug. After connecting it, your install is simple as the wires will color-match and easily connect to the after-market stereo. Without the VWH-1004, you would have to cut the OE radio plug and manually test each wire to connect to your after-market receiver.

In addition, because you do not have to cut your OE radio plug off, the VWH-1004 allows you to reinstall your factory receiver if necessary. A great example is if you sold your car, but wanted to keep your after-market radio and re-install your factory stereo receiver. We also recommend the Scosche BOBAZT for a quick connection that is sure to last.

Product Features:
  • Harness is used when installing an aftermarket stereo
  • Connects the aftermarket stereo harness to the vehicles factory harness
  • Designed specifically to fit the compatible vehicles
  • Plugs into the factory harness without cutting any wires
  • Standard color coded wires provide a consistent and simplified installation
  • Made from OEM quality materials
  • Compatible with Select 1987-2002 Volkswagen Vehicles
  • Scosche Equivalent: Scosche VW01B and Metra Equivalent: Metra 70-1784


  • Yellow – 12V Constant
  • Red – 12V Accessory
  • Orange – Dash Light Dimmer/Illumination
  • Green – Left Rear Speaker (+)
  • Green with Black Stripe Left Rear Speaker (-)
  • White – Left Front Speaker (+)
  • White with Black Stripe – Left Front Speaker (-)
  • Purple – Right Rear Speaker (+)
  • Purple with Black Stripe – Right Rear Speaker (-)
  • Gray – Right Front Speaker (+)
  • Gray with Black Stripe – Right Front Speaker (-)
  • Blue - Power Antenna
Compatible with the following vehicles:
  • Audi:
    • 1989 - 1994 Audi 100
    • 1989 - 1990 Audi 200
    • 1988 - 1992 Audi 80
    • 1996 - 2002 Audi A4
    • 1995 - 2001 Audi A6
    • 1997 - 2002 Audi A8
    • 1992 - 2002 Audi S4
    • 1995 - 2001 Audi S6
    • 2000 - 2002 Audi TT
  • Volkswagen:
    • 1998 - 2004 Beetle
    • 1995 - 2001 Cabrio
    • 1990 - 1994 Corrado
    • 1993 - 2002 EuroVan
    • 1986 - 2001 Golf
    • 1995 - 2001 Golf GTI
    • 1980 - 2001 Jetta
    • 1990 - 2001 Passat

Harness Features

Vehicle Sound System
This refers to what kind of sound system the vehicle has. Premium audio systems are generally name brand systems (such as JBL, Bose, Rockford Fosgate, etc) that have been installed inside a vehicle when it leaves the factory. Often they more advanced systems, complex wiring, factory amplifiers, and other features that can make installing aftermarket component difficult.
Standard Sound
Main Harness Function
Different installations on different vehicles require different harnesses. This type is what the harness is considered. Each wiring harness we sell serves a purpose such as installing an aftermarket car stereo, integrating an aftermarket amplifier with your factory car stereo, connecting Bluetooth to your factory car stereo, and more.
Connect/Install an Aftermarket Car Stereo
Additional Harness Features
The various features that the wiring harness provides to your car stereo and/or audio system.
Compatible Vehicle Make
Allows you to view only items that are compatible with your vehicle's make. Does not guarantee that it will work with your vehicle year or model.
Compatible Vehicle Make and Model
The model of vehicle that this vehicle specific product is designed for. Please keep in mind that engine variations can affect the compatibility of the products.


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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Elk River, MN

A must buy

March 13, 2012

I purchased this adaptor for my Audi 100 which had the factory Bose sound system. The main reason I purchased the adaptor was because the factory system blew out on me.

Installation was fairly easy. Anyone that has the Bose system you will only need 4 wires. The Yellow Constant Power wire, Red accessory wire, Black ground wire and if you wish the orange dimmer wire. The other 16 wires are useless. You will however need to run new wire from an aftermarket deck to all new speakers. DO NOT USE STOCK BOSE SPEAKERS!! They are all 1 ohm "Which I confirmed with a multi-meter" and will fry any head unit you hook them up too over a short time. Most aftermarket amps aren’t even 1 ohm stable so please keep this in mind.

If you don’t have the Bose system you may be able to use the speaker wires if they do indeed lead to a speakers but test the speakers just in case. If they are 1 or 2 ohms replace them. The Audi wiring is ridiculous and this makes things simple, clean, and doesn’t require you to cut into you're stock harnesses.

I highly recommend this for anyone that needs to replace the Bose system in their Audi or VW vehicles. But keep in mind this is NOT a plug and play ordeal. You will need to do a lot of work to replace that Stock Bose system.

You will need this adaptor so you don’t need to rewire or splice the 3 required wires. An antenna adaptor I recommend the Raptor AD-VW1, if you have two antenna connections just use one.

At least 100ft of new wire with all new speakers. You can also upgrade to a 4 ch amp and get stronger speakers if you don’t want to run off the head unit’s power. Amp installation kit required.

I really do recommend this product. It has all the correct wires you will need and then some. This adaptor is a necessity for anyone needing to replace a Bose system in their Audi and VW vehicles. It's not easy but has to be done.

Sonic Electronix was great. This was my first purchase from them and I could not be happier. They have the best prices I have ever seen and have great shipping. If I ever need anything else Sonic Electronix will definitely be my first stop. Sorry for being so long winded but I hope this helped you out.

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: American International VWH-1004