MODIFIEDLIFE

2003 Volkswagen Jetta Monsoon Stereo Wiring Schematic


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

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

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

2003 Volkswagen Jetta Stereo Wiring Diagram

This 2003 Volkswagen Jetta stereo wiring chart shows you all the 2003 Volkswagen Jetta 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+) Plug #3, Pin #7
Car Radio Accessory Wire (Switched Power 12v+) Plug #3, Pin #4
Car Radio Ground Wire Plug #3, Pin #8
arrow Use a Car Radio Wiring Harness and Car Radio Dash Kit for an Easy Install!
Car Radio Illumination Wire Plug #3, Pin #6
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 N/A
arrow Use an Amp Integration Harness to Connect Your Factory Amplifier to an aftermarket radio.
2003 Volkswagen Jetta Monsoon Radio Wire Harness Diagram

2003 Volkswagen Jetta Speaker Wiring Guide

This 2003 Volkswagen Jetta speaker wiring chart shows you every speaker wire color and the speaker wire location. Use this 2003 Volkswagen Jetta 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 (+) Plug #2, Pin #5
Front Left Speaker Negative Wire (-) Plug #2, Pin #6
Front Right Speaker Positive Wire (+) Plug #2, Pin #3
Front Right Speaker Negative Wire (-) Plug #2, Pin #4
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 (+) Plug #2, Pin #7
Rear Left Speaker Negative Wire (-) Plug #2, Pin #8
Rear Right Speaker Positive Wire (+) Plug #2, Pin #1
Rear Right Speaker Negative Wire (-) Plug #2, Pin #2
arrow Upgrade your Subwoofer for deeper lows!
Subwoofer Positive Wire (+) N/A
Subwoofer Negative Wire (-) N/A
Signal for Anti-Theft Alarm System Wire Plug #3, Pin #1
Data Link Connector (DLC) K-Wire Plug #3, Pin #3
Battery Supply Constant 12v+ Wire for Anti-Theft System (SAFE) Plug #3, Pin #5
CD Changer Data In Wire Plug #2, Pin #11
CD Changer Data Out Wire Plug #1, Pin #14
CD Changer Clock Wire Plug #1, Pin #15
CD Changer Constant Battery 12v+ Wire Plug #1, Pin #16
CD Changer Switched Battery 12v+ Wire N/A
CD Changer Control Signal Wire Plug #1, Pin #17
CD Changer Ground Wire Plug #1, Pin #18
CD Changer Left Line Out Wire Plug #1, Pin #19
CD Changer Right Line Out Wire Plug #1, Pin #20
2003 Volkswagen Jetta Monsoon Radio Wire Harness Diagram

2003 Volkswagen Jetta Speaker Sizes and Location

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

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 1″ Tweeters
Front Tweeter Depth 1″ Depth
Front Tweeter Location N/A
arrow Upgrade your Tweeters for cleaner audio highs!
Front Speaker Size 6.5″ Speakers
Front Speaker Depth 2.5″ Depth
Front Speaker Location Front Dash
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 2.5″ Depth
Rear Speaker Location Rear Panels
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 Jetta 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 Jetta 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!

21 thoughts on “2003 Volkswagen Jetta Monsoon Stereo Wiring Schematic”

  1. Jesse, if you’re installing an aftermarket radio into your 2003 Volkswagen Jetta and want to retain your steering wheel controls it is possible but it depends on the manufacturer of your aftermarket radio:

    Steering Wheel Control Adapter for Alpine Radio
    Steering Wheel Control Adapter for Blaupunkt Radio
    Steering Wheel Control Adapter for Clarion Radio
    Steering Wheel Control Adapter for Eclipse Radio
    Steering Wheel Control Adapter for JVC Radio
    Steering Wheel Control Adapter for Kenwood Radio
    Steering Wheel Control Adapter for Pioneer Radio
    Steering Wheel Control Adapter for Sony Radio
    Steering Wheel Control Adapter for Valor Radio

    If you have 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 Jetta stereo installation.

  2. 1st, thank you for the diagram. Second, I am swapping out my oem monsoon unit for an aftermarket double din. I have the volume and track controls on my steering wheel. I need to track down the pins used for those controls so that I can wire them into the remote of the aftermarket stereo, thus retaining the use of those buttons with an aftermarket unit. Can you help?

  3. My 2003 Volkswagen Jetta radio volume is very low, even on max. However, the cassette and CD volumes sound great and get to the right volume. Is there something I can do with this? anyone know?

  4. I have a 2003 Jetta 2.0L with the Monsoon radio system. The faceplate is bad and I want to replace it with, essentially, two single din radios (not one double din). I have actually already pulled out the radio as it wasn’t working properly and something needed to be done anyhow.

    1) Is this even possible? Is the power requirement and fuse structure there to do so?

    2) If it is possible, what wiring harnesses will I need? Will I have to, or want to, work the Monsoon amp into it? And does mine have the amplified antenna to worry about?

  5. I have a 2003 jetta TDI, the radio works when you turn on the car but then it seems to have a bad conncetion with the antenna, the radio will just cut out and got to static on all channels some times it will come back and others it will not. What connections should I check and where?

  6. I have a 2003 volkswagen jetta with a monsoon. The display says “phone” and the unit won’t function AT ALL. It still displays this after the key is turned off and removed. I had to pull the fuse to avoid running the battery down. I thought it may reset when I put the fuse back in but it didn’t. Is there a reset procedure or code for this problem? It just showed up this way one morning with no prior issues. Any ideas??

  7. I have a 2003 Volkswagen GTI 1.8 Turbo with a Monsoon stereo. A few days ago the CD stopped working and when I pressed the CD button the first time after that, the message “CD ERROR 4” showed up. This message only appears the first time you press the CD button after disconnecting the battery. Is this some kind of a protection code? Is there a list of codes? Can this be fixed? Thank you very much, Oscar

  8. WE have an 03 jetta wagon with the “Premium 6” head unit and we think the Monsoon, but we’re not sure. In any case the head unit suddenly lost all power..we suspected a fuse, but checked the fuse block and didn’t find anything bad or marked for the radio. So we pulled the radio out and there’s a 10A fuse on the back of the radio that you access by pulling the connector block, but that fuse wasn’t bad either? Could it be the monsoon amp that’s keeping it from coming on? Seems like there’s 12v power at the connector B+ and Safe lugs. Not sure where else to look or if we’ve made things worse by unplugging the radio from this anti-theft power source? Help?!? =)

  9. David Hyler-Both

    I have a 2003 VW Jetta and during a regular service visit to the VW dealer the repair people had to disconnect the battery. After doing this they for some reason pulled out the Monsoon stereo and broke the connector for the antenna (they deny breaking it). They gave me some song and dance about the antenna being bad. I have tested the antenna and it is not bad. I have tried several adapters/connectors to attach the antenna to the Monsoon stereo all with absolutely no effect. Any suggestions – Do I have to replace the antenna and wire just to get the right connector? Anyone? Thanks, David.

  10. Matthew Petercsak

    I am looking to find out which wire is what on the factory amplifier on the monsoon system for a 2003 VW gti. I need to pull power and remote wire off that wiring harness. Thank you.

  11. I just purchased a 2003 Jetta Wagon with a Premium Cassette/ CD radio. It doesn’t have the Monsoon logo on the face of the unit. In the back of the car on the left side it has a plastic frame i guess for the CD changer. Above the CD changer is a smaller space for what equipment I don’t know? I was told that the car was prewired for a CD changer. It does have the wire bundle with a contector on the end. Do I have a Monsoon? If I don’t have a Monsoon system how hard would it be to up grade?

    Thanks
    Bonnie

  12. Robert, what has happened is that the Monsoon radios have a anti theft lock on them. You will need to find the code to unlock your system (usually found in the owners manual) if you do not find the code you will have to contact you VW dealer and have them do this for you and this is because you unhooked the original battery.

  13. purchased a used 2003 Jetta 2.0L with 100,000 miles. Had to replace the with new battery. Now the monsoon radio turn on for about 1 hour then kicks off. The radio station and power stays on. However, the volume control does not work and no sound comes out the radio. When I turn on, sound comes on for like 10 seconds then kicks off again.

    How do i if fix this? Does this have anything to do with me changing the battery? Is there a fuse or reset that needs to be changed?

    Thanks,
    Bob

  14. How do I power (trigger) the factory Monsoon amp and should the RCA pre-amp leads be used for signal “out” of the aftermarket HU?

  15. Jeremiah, the power lead on the stock radio doesn’t offer enough power to power an aftermarket head unit. You’ll need to run a wire from the new HU power lead over to the fuse box and connect to one of the always on items.

    George brooks, the monsoon amplifier is located in the trunk underneath the hat ledge. It is in a black cage.

  16. 03 jetta, monsoon radio. factory radio. problem: install the radio, it works but we get no sound. We think it may be the amp. 1) where is the amp and where does it connect to the radio. 2) there is a connector next to the antenna connection, is that the amp?
    thanks

  17. I have an 03 jetta with a monsoon, it says phone on the display and wont work. I want to put a different stereo in. is it as easy as it should be? like in older cars? oh and will it make my odometer shut off with the car too?

  18. I have a 2003 VW Jetta that I am trying to install an aftermarket radio into. However when I attach the power leads from the radio to the wiring harness and the ground line the radio does not turn on. I have tested the radio directly on a 12V supply and found that the radio does work, for some reason I can’t figure out is why the radio will not turn on with the wiring harness. I have tried various ways of testing the harness and the radio but I have found not fault with either. If you have any suggestions please email me. thank you, Joe

Leave a Comment

Your email address will not be published. Required fields are marked *