2003 Volkswagen Jetta Car Audio Wiring Diagram

Whether your an expert Volkswagen Jetta mobile electronics installer, Volkswagen Jetta fanatic, or a novice Volkswagen Jetta enthusiast with a 2003 Volkswagen Jetta, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 2003 Volkswagen Jetta vehicles are becoming increasing more difficult to identify due to the installation of more advanced factory oem electronics.

One of the most time consuming tasks with installing an after market car stereo, car radio, satellite radio, xm radio, car speakers, tweeters, car subwoofer, crossovers, audio equalizer, car amplifier, mobile amp, car amplifier, mp3 player, ipod or any car audio electronics is identifying the correct color car audio wires for your 2003 Volkswagen Jetta.

The Modified Life staff has taken all its Volkswagen Jetta car radio wiring diagrams, Volkswagen Jetta car audio wiring diagrams, Volkswagen Jetta car stereo wiring diagrams, Volkswagen Jetta car radio wiring schematics, Volkswagen Jetta car wiring diagrams and cataloged them online for use by our visitors for free. Our automotive wiring diagrams allow you to enjoy your new mobile electronics rather than spend countless hours trying to figure out which wires goes to which 2003 Volkswagen Jetta part or component.

Feel free to use any Volkswagen Jetta car stereo wiring diagram that is listed on Modified Life but keep in mind that all information here is provided “as is” without any warranty of any kind and most of the car audio wiring diagrams listed on our enthusiast website are submitted by the Modified Life community. Use of the Volkswagen Jetta wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 2003 Volkswagen Jetta.


If you have any questions pertaining to the audio system in the 2003 Volkswagen Jetta, please feel free to post it at the bottom of this page and either we’ll do our best to find you the information you need or hopefully someone in the Modified Life community will have the information you’re looking for.

Request a Car Stereo Wiring Diagram

If you can’t find a particular car audio wire diagram on Modified Life, please feel free to post a car radio wiring diagram request at the bottom of this page and we’ll do our best to find you the diagram or schematic you need for your mobile audio installation.

Adding More Information

If you would like to help the Modified Life community by adding any missing information or adding a new car audio wire diagram to our resource, please feel free to post it at the bottom of this page.

2003 Volkswagen Jetta Car Stereo Wiring Diagram

Car Radio Battery Constant 12v+ Wire: Red/White
Car Radio Accessory Switched 12v+ Wire: Yellow/Red
Car Radio Ground Wire: Orange
Car Radio Illumination Wire: N/A
Car Stereo Dimmer Wire: Gray/Blue
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: Green/Red
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Blue/Black
Left Front Speaker Negative Wire (-): Orange/Blue
Right Front Speaker Positive Wire (+): Red/White
Right Front Speaker Negative Wire (-): Orange/White
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Red/Light Green
Left Rear Speaker Negative Wire (-): Orange/Black
Right Rear Speaker Positive Wire (+): Blue/Light Green
Right Rear Speaker Negative Wire (-): Orange/Red

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  • Reply Terrie Jarvis April 12, 2008 at 4:55 pm

    On my 2003 Jetta, the radio shows that it is on when you push the button and it displays one station. But it does not play, you cannot change stations, the red light does not blink, the CD player doesn’t work….absolutely nothing happens other than the display shows station 88.1. Any suggestions?

  • Reply jeff October 31, 2008 at 7:57 pm

    i had the same problem. it took me a couple hours to find out exactly what was wrong. if you have the monsoon stereo, there is a software glitch that they were supposed to fix if you came in still under warranty. if it is not under warranty then you need to buy a new stereo, since the factory replacement is around $1000. it happened to a lot of VW owners. some say that if you remove #42 fuse for a couple minutes that it reboots the radio and starts working again. this did not work for me. the fuse trick was only temporary.

  • Reply ModifiedLife November 4, 2008 at 5:17 pm

    Jeff, thanks for the car stereo information contribution.

  • Reply dean stoneburner February 15, 2009 at 12:56 pm


  • Reply ModifiedLife February 24, 2009 at 8:32 pm

    Dean, we’re glad we could help you with your car stereo wiring diagram needs.

  • Reply JT henry June 17, 2009 at 4:01 pm

    ok it seems that when i bought my 2003 GTI the stock amp had been removed an all plugs were cut i need to know how i can still run the stock speakers

  • Reply ModifiedLife June 25, 2009 at 2:33 am

    JT, you can wire the speakers directly from your head unit – or – you can find a working stock amplifier with plugs and splice everything together – or – you can find an aftermarket amp and splice everything together. The easiest route would be to wire everything directly from the head unit. Hope this helps. Good luck.

  • Reply Stormbow December 6, 2009 at 5:19 am

    Front Door Speakers: 6-3/4″
    Rear Door Speakers: 6-3/4″

  • Reply ModifiedLife December 15, 2009 at 4:12 am

    Stormbow, thanks for the 2003 Volkswagen Jetta car speaker information contribution!

  • Reply Tyson Miller September 25, 2011 at 5:33 pm

    I recently purchased a 01/2004 Jetta Wagon GLS Tdi. It has an aftermarket Kenwood stereo in it, so I don’t know what factory was. The stereo works without the key in the ignition, you have to turn the stereo on or off by itself. I can’t locate the ignition switched 12v wire. There are 2 heavier factory Red/white stripe wires coming to the factory harness, the ground wire is brown. There are 2 orange wires, 1 with a green stripe, the other with a brown stripe, in the same section as the power supply wires. It would appear that all of the speaker ground wires are black, with the positives being brown, green, tan, and yellow. There is a 3rd section in the factory harness that is a blue plug, with 8 wires going into it. Can anyone help!?! Tyson

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