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Metra 70-9003

Wiring Harness for Select 2002-2007 BMW/VW Vehicles

In Stock

List price $19.99

You Save: $16.00 (80.04%)


with warranty

Order within 51 hrs 20 mins to ship 8/3

Arrives by Monday, Aug. 10 to zip 20147

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Will this fit my ride?

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This will fit your [YEAR] [MAKE] [MODEL] [BODY] [TRIM] [AUDIO PACKAGE]
This will not fit your [YEAR] [MAKE] [MODEL] [BODY] [TRIM] [AUDIO PACKAGE]

In Stock

Arrives by Mon, Aug. 10

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Product Features:

  • Works with select 2002-Up BMW/Volkswagen Vehicles
  • 40-Pin Connector
  • Used for Installing an Aftermarket Receiver to factory plug.
  • Color coded to make installation easier
  • Excellent flexibility, power handling, and higher heat resistance
  • 7" in length
  • Terminals lock securely
  • 1-year Manufacturer's Warranty
  • Check the Product Instructions to see basic instructions and compatibility list for the Metra 70-9003


  • Yellow 12V Constant
  • Red 12V Accessory
  • Black - Ground
  • 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 (-)

Compatibility List:

  • BMW:
    • 2002 - 2005 3 Series
    • 2002 - 2003 5 Series
    • 2002 M3
    • 2002 M5
    • 2002 - 2005 Mini
    • 2000 - 2005 X5
    • 2003 - 2005 Z4
  • Volkswagen:
    • 2002 Cabrio
    • 2002 Golf GTI
    • 2002 - 2004 Golf
    • 2002 - 2004 Jetta
    • 2002 - 2004 Passat
    • 2004 - 2005 Touareg

Harness Features

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
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.
BMW 3 Series
BMW 5 Series
Volkswagen Cabrio
Volkswagen Golf
Volkswagen GTI
Volkswagen Jetta
Volkswagen Passat

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


Morristown, TN

Good procuct

December 8, 2013

Not much to comment on except works like it should. Is color coded,

9 of 19 found this helpful

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Browse 3 questions and 5 answers
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Why did you choose this?
Sonic Electronix Store
Great price and it should fit my '02 BMW X5 E53
Irwin F on Dec 5, 2014
needed a new harness
Jason C on Aug 13, 2014
must have. I don't want to cut the factory harness
Brian P on Nov 3, 2014
Will this work with the harmon kardon stereo upgrade?
taylor g on Aug 1, 2014
Best Answer: This will work with any stereo as long as it fits your car. Double check that it will be researching a little bit. As long as it plugs into your cars factory harness it will work. This requires you to spice the wires from the harness of your stereo to the metra harness that connects to the oem harness.
Reply · Report · Brady H on Aug 2, 2014
· Add Answer · I Have This Question Too (1)
04 BMW X5 4.4i with Navigation. Is this the correct wire harness for this model? Any help is appreciated.
Seth S on May 5, 2015
Metra 70-9003
Metra 70-9003
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· Add Answer · I Have This Question Too (0)

Product Summary


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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: Metra 70-9003