Question: Where can I find a 2004 Pontiac GTO radio wiring diagram? What are the 2004 Pontiac GTO radio wiring harness color codes?
If you’re planning to upgrade the radio in your 2004 Pontiac GTO or troubleshoot issues with your car stereo, this guide is here to help!
Our comprehensive 2004 Pontiac GTO radio wiring diagram shows all the radio wire harness colors, speaker wire colors, and speaker sizes. Use this head unit pinout guide to help with your car stereo installation or to troubleshoot radio wiring issues in your 2004 Pontiac GTO.
In This Guide
2004 Pontiac GTO Car Stereo Wiring Diagram
This 2004 Pontiac GTO radio wiring chart shows you all the 2004 Pontiac GTO stereo wire color codes and their radio wire functions. This easy-to-follow guide can help you install a new car stereo or figure out problems with your stereo wiring harness and radio setup. 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.
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Car Radio Battery Wire (Constant 12v+) | Orange/Black |
| Car Radio Accessory Wire (Switched 12v+) | Yellow |
| Ground Wire | Black/White |
Use a Wiring Harness  and Dash Kit  for an Easy Install! |
|
| Illumination Wire | Brown/White |
| Dimmer Wire | Brown |
| Antenna Trigger Wire | N/A |
| Car Radio Amp Trigger Wire | N/A |
| Amplifier Location | N/A |
2004 Pontiac GTO Speaker Wiring Guide
This 2004 Pontiac GTO speaker wiring chart shows you every speaker wire color and the speaker wire polarity. Use this 2004 Pontiac GTO chart makes it easy to identify each wire and where it connects. 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.
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Front Left Speaker Positive Wire (+) | Tan |
| Front Left Speaker Negative Wire (-) | Gray |
| Front Right Speaker Positive Wire (+) | Light Green |
| Front Right Speaker Negative Wire (-) | Dark Green |
| Rear Left Speaker Positive Wire (+) | Brown/Black |
| Rear Left Speaker Negative Wire (-) | Yellow/Blue |
| Rear Right Speaker Positive Wire (+) | Blue/Orange |
| Rear Right Speaker Negative Wire (-) | Blue/Black |
| Subwoofer Left Positive Wire (+) | Brown/Black (Same Wire as Rear Left Speaker) |
| Subwoofer Left Negative Wire (-) | Yellow/Blue (Same Wire as Rear Left Speaker) |
| Subwoofer Right Positive Wire (+) | Blue/Orange (Same Wire as Rear Right Speaker) |
| Subwoofer Right Negative Wire (-) | Blue/Black (Same Wire as Rear Right Speaker) |
| Use a Steering Wheel Control Adapter to Keep Your Steering Wheel Controls. | |
2004 Pontiac GTO Speaker Sizes and Locations
This 2004 Pontiac GTO speaker guide includes speaker sizes, speaker locations, and helpful info on speaker upgrades. Use this chart to find out what size speakers fit your 2004 Pontiac GTO.
| Application | Speaker Size/Location |
|---|---|
| Dash Center Speaker Size | N/A |
| Dash Center Speaker Depth | N/A |
| Dash Center Speaker Location | N/A |
| Front Tweeter Size | N/A |
| Front Tweeter Depth | N/A |
| Front Tweeter Location | N/A |
| Front Speaker Size | 3 1/2″ Speakers |
| Front Speaker Depth | N/A |
| Front Speaker Location | Dash |
| Rear Tweeter Size | N/A |
| Rear Tweeter Depth | N/A |
| Rear Tweeter Location | N/A |
| Rear Speaker Size | 6 1/2″ Speakers |
| Rear Speaker Depth | N/A |
| Rear Speaker Location | Rear Deck |
| Subwoofer Size | N/A |
| Subwoofer Depth | N/A |
| Subwoofer Location | N/A |
Questions and Answers
If you have any questions about your 2004 Pontiac GTO 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
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5 thoughts on “2004 Pontiac GTO Radio Wiring Harness Guide”
i have a 2004 gto.The sound system went out all at once.the radio turns on, but no sound from any speakers.checked fuses, they are okay.as far as i know, the speakers are not wired so that if one goes they all go.what would cause all speakers to not work at the same time?
check the amp it shut off
The left rear speaker wires are yellow/white & yellow/red.
The right right speaker wires are green/white & green/red.
Which one are positive and which are negative?
I have a quick question. i just installed a brand new head unit stereo (sony xplod) for my 2004 pontiac gto. nothing too big or fancy, just a regular stereo. for some reason, every time i try to store my radio stations it doesn’t save. that’s every time i take the key out of the ignition its like i never stored my stations at all. so i have to store them every time i turn on the car and when i take the key out its all lost. any ideas? i took it to the place where they installed it and they said my car is basically like a Cadillac that it doesn’t have a memory? any ideas if maybe the wires are cross wrong or something?
John, you may have mixed up the battery constant and accessory switched wires. The battery constant always sends power to the radio to save your radio stations and other audio settings. The accessory switched wire sends power to your radio only when the key is in the ignition and your 2004 Pontiac GTO is on. Check your wiring and make sure the correct radio wires are hooked up to the correct wires on your factory harness. Hope this helps. Good luck with your 2004 Pontiac GTO radio installation.