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2003 Volkswagen Passat Stereo Wiring Guide


Question: Where can I find a 2003 Volkswagen Passat stereo wiring diagram? What are the 2003 Volkswagen Passat radio wiring harness colors?

If you’re looking to change the radio in your 2003 Volkswagen Passat or troubleshoot why your car radio stopped working, we’re here to help!

Our comprehensive 2003 Volkswagen Passat stereo wiring diagram shows you all the stereo wire harness colors, car speaker wiring colors and car speaker sizes. Use our 2003 Volkswagen Passat stereo wiring guide to help you with your car radio and installation needs.

2003 Volkswagen Passat Stereo Wiring Diagram

This 2003 Volkswagen Passat stereo wiring chart shows you all the 2003 Volkswagen Passat stereo wire colors and their functions. Utilize this guide to help you with a car radio install or help with a car radio troubleshoot. If you don’t see the car radio wiring information you’re looking for, please feel free to ask your question at the bottom of this page.

Application Radio Wire Color
Car Radio Battery Wire (Constant Power 12v+) Red/Blue
Car Radio Accessory Wire (Switched Power 12v+) Run a wire to the fuse box or ignition switch harness for switched power.
Car Radio Ground Wire Brown
arrow Use a Car Radio Wiring Harness and Car Radio Dash Kit for an Easy Install!
Car Radio Illumination Wire Gray/Blue
Car Stereo Dimmer Wire N/A
Car Radio Antenna Trigger Wire N/A
Car Radio Amp Turn-On Trigger Wire N/A
Car Radio Amp Mute Wire N/A
Car Radio Amplifier Location Car amplifier is located under the rear deck.
arrow Use an Amp Integration Harness to Connect Your Factory Amplifier to an aftermarket radio.

2003 Volkswagen Passat Speaker Wiring Guide

This 2003 Volkswagen Passat speaker wiring chart shows you every speaker wire color and the speaker wire location. Use this 2003 Volkswagen Passat speaker wiring guide to help you with a speaker replacement or speaker upgrade. If the car speaker wiring information you’re searching for is not listed, please don’t hesitate to ask for it at the bottom of this page.

Application Speaker Wire Color
Front Center Speaker Positive Wire (+) N/A
Front Center Speaker Negative Wire (-) N/A
arrow Upgrade your Center Speakers for awesome sound!
Front Left Tweeter Positive Wire (+) N/A
Front Left Tweeter Negative Wire (-) N/A
Front Right Tweeter Positive Wire (+) N/A
Front Right Tweeter Negative Wire (-) N/A
arrow Upgrade your Tweeters for cleaner audio highs!
Front Left Speaker Positive Wire (+) Red/Green
Front Left Speaker Negative Wire (-) Brown/Green
Front Right Speaker Positive Wire (+) Red
Front Right Speaker Negative Wire (-) Brown/Red
arrow Use a Speaker Wire Harness for easy Speaker Installation!
Rear Left Tweeter Positive Wire (+) N/A
Rear Left Tweeter Negative Wire (-) N/A
Rear Right Tweeter Positive Wire (+) N/A
Rear Right Tweeter Negative Wire (-) N/A
arrow Upgrade your Tweeters for cleaner audio highs!
Rear Left Speaker Positive Wire (+) Blue/White
Rear Left Speaker Negative Wire (-) Brown/White
Rear Right Speaker Positive Wire (+) Blue
Rear Right Speaker Negative Wire (-) Brown/Blue
arrow Upgrade your Subwoofer for deeper lows!
Subwoofer Positive Wire (+) N/A
Subwoofer Negative Wire (-) N/A

2003 Volkswagen Passat Speaker Sizes and Location

This 2003 Volkswagen Passat speaker size chart shows your speaker measurements and speaker locations. Use this chart to see what speaker fits in your 2003 Volkswagen Passat.

Application Speaker Size and Location
Front Center Speaker Size N/A
Front Center Speaker Depth N/A
Front Center Speaker Location N/A
arrow Upgrade your Center Speakers for awesome sound!
Front Tweeter Size N/A
Front Tweeter Depth N/A
Front Tweeter Location N/A
arrow Upgrade your Tweeters for cleaner audio highs!
Front Speaker Size 6.5″ Speakers
Front Speaker Depth 3″ Depth
Front Speaker Location Front Doors
arrow Use a Speaker Wire Harness for easy Speaker Installation!
Rear Tweeter Size N/A
Rear Tweeter Depth N/A
Rear Tweeter Location N/A
arrow Use a Speaker Wire Harness for easy Speaker Installation!
Rear Speaker Size 6.5″ Speakers
Rear Speaker Depth 3″ Depth
Rear Speaker Location Rear Deck
arrow Upgrade your Subwoofer for deeper lows!
Car Subwoofer Speaker Size N/A
Car Subwoofer Speaker Depth N/A
Car Subwoofer Speaker Location N/A

Questions and Answers

If you have any questions about your 2003 Volkswagen Passat radio installation, please don’t hesitate to post them at the bottom of this page. We’re committed to finding the answers you need, and members of the Modified Life community may also provide valuable insights into the car stereo information you’re looking for. Don’t hesitate to ask your car audio question; it could benefit others seeking the same answers!

Contribute

Do you want to contribute 2003 Volkswagen Passat stereo wire diagram information to benefit the Modified Life community? Feel free to share your insights by posting at the bottom of this page. We will gather any additional information presented below by our community, verify it, and incorporate it into the car radio wiring guide above for easy reference. We are consistently adding new information to improve and update this car stereo wiring guide as it becomes available. We appreciate your contribution in advance!

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8 thoughts on “2003 Volkswagen Passat Stereo Wiring Guide”

  1. Adria, your 2003 Volkswagen Passat Wagon does not have an aux input jack. We suggest you purchase an automotive auxiliary input adapter. This adapter will allow you to input any Apple iPod, mp3 player or portable music player into your factory radio. This is the easiest and most cost effective way to add an audio input into your factory stereo directly rather than over the air. Here is the adapter you will need:

    Auxiliary Input Adapter for 2003 Volkswagen Passat Wagon

    If you’ve never installed car audio before, we advise you to take your car to an experienced mobile audio installer. Hope this helps. Good luck with your 2003 Volkswagen Passat Wagon aux input adapter installation.

  2. Hi, I have a 2003 volkswagen passat and installed a after market stereo and was wondering if it is possible to hook up the factory amp in the car. anyone?

  3. Hey I was looking to install subs and an amp into my car with the stock radio. I have an output adapter for my RCA cables to hook up to the amp, but I’m unsure of how to wire it in. I have located the rear speaker wiring and was wondering if i should disconnect these wires and use those to wire to my output converter, however, I am unsure if this is the correct way to do this. thanks

  4. Shane, it sounds like you haven’t properly wired up your accessory switched power source. The factory stereo wire harness does not provide a accessory switched power source. Run a wire to the fuse box and find a switched power source that turns on and off with your key. Use this wire to turn your radio on and off. Hope this helps. Good luck with your 2003 Volkswagen Passat radio installation.

  5. Hi, i want to change the radio in my 2003 Passat. but the radio i put in, does not automatically turn on/off with the key like the original one. is it possible to change it so it turns on/off with the key? thanks, Shane

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