Question: Where can I find a 2004 Pontiac Grand Prix radio wiring diagram? What are the 2004 Pontiac Grand Prix radio wiring harness colors?
If you’re looking to change the radio in your 2004 Pontiac Grand Prix or troubleshoot why your car radio stopped working, we’re here to help!
Our comprehensive 2004 Pontiac Grand Prix radio wiring diagram shows you all the radio wire harness colors, car speaker wiring colors and car speaker sizes. Use our 2004 Pontiac Grand Prix stereo wiring guide to help you with your car radio and installation needs.
In This Guide
2004 Pontiac Grand Prix Radio Wiring Diagram
This 2004 Pontiac Grand Prix radio wiring chart shows you all the 2004 Pontiac Grand Prix radio 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 12v+) | Orange |
| Car Radio Accessory Wire (Switched 12v+) | Run a wire from the back of the radio to the steering column or fuse box for a switched power source. |
| Car Radio Ground Wire | Black/White |
 Use a Car Radio Wiring Harness and Car Radio Dash Kit for an Easy Install! |
|
| Car Radio Illumination Wire | N/A |
| Car Stereo Dimmer Wire | N/A |
| Car Radio Antenna Trigger Wire | Violet |
| Car Radio Amp Trigger Wire | Violet |
| Car Radio Amplifier Location | Car amplifier is located under the center of the rear deck in the trunk. |
| Use an Amp Integration Harness to Connect Your Factory Amplifier to an aftermarket radio. |
|
2004 Pontiac Grand Prix Speaker Wiring Guide
This 2004 Pontiac Grand Prix speaker wiring chart shows you every speaker wire color and the speaker wire polarity. Use this 2004 Pontiac Grand Prix 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 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 |
| Use a Speaker Wire Harness for easy Speaker Installation! |
|
| Rear Left Speaker Positive Wire (+) | Brown |
| Rear Left Speaker Negative Wire (-) | Yellow |
| Rear Right Speaker Positive Wire (+) | Dark Blue |
| Rear Right Speaker Negative Wire (-) | Light Blue |
| Use a Steering Wheel Control Adapter to Keep Your Steering Wheel Controls. |
|
2004 Pontiac Grand Prix Speaker Sizes and Location
This 2004 Pontiac Grand Prix speaker size chart shows your speaker measurements and speaker locations. Use this chart to see what speaker fits in your 2004 Pontiac Grand Prix.
| Application | Speaker Size and Location |
|---|---|
| Front Center Speaker Size | N/A |
| Front Center Speaker Depth | N/A |
| Front Center Speaker Location | N/A |
| Upgrade your Center Speakers for awesome sound! |
|
| Front Tweeter Size | N/A |
| Front Tweeter Depth | N/A |
| Front Tweeter Location | N/A |
| Upgrade your Tweeters for cleaner audio highs! |
|
| Front Speaker Size | 6 1/2″ Speakers |
| Front Speaker Depth | N/A |
| Front Speaker Location | Front Doors |
| Use a Speaker Wire Harness for easy Speaker Installation! |
|
| Rear Tweeter Size | N/A |
| Rear Tweeter Depth | N/A |
| Rear Tweeter Location | N/A |
| Use a Speaker Wire Harness for easy Speaker Installation! |
|
| Rear Speaker Size | 6″ x 9″ Speakers |
| Rear Speaker Depth | N/A |
| Rear Speaker Location | Rear Deck |
| 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 2004 Pontiac Grand Prix 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 2004 Pontiac Grand Prix 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!
15 thoughts on “2004 Pontiac Grand Prix Stereo Wiring Diagram”
DJ, yes you can hook up your an amplifier and subwoofer to your stock stereo. You will need some aftermarket electronics to hook up a subwoofer to your 2004 Pontiac Grand Prix factory stereo. You will need five components:
1. Car Subwoofer
2. Car Subwoofer Box to house your car subwoofer.
3. Car Audio Amplifier that matches your subwoofer power needs and ohm rating.
4. Car Amplifier Wiring Kit that can handle the power needs of your amplifier.
5. RCA Line Out Converter to feed an audio signal from your factory radio to your aftermarket amplifier.
First run all your amplifier power from your car battery to where you plan on mounting your amplifier. Next, run your ground wire from your grounding point to your amplifier. Wire up the RCA Line Out Converter to the rear speaker wires to get a full range audio source. Next, connect one end of your RCA jacks to the Line Out Converter and the other end of the RCA jacks to your amplifier. This will provide an audio signal to your after market amp. Lastly, connect your subwoofer to your after market amplifier using the speaker wire in the amplifier wiring kit. 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 2004 Pontiac Grand Prix amplifier and subwoofer installation.
could i hook up aftermarket amplifier and subwoofers on my 2004 pontiac grand prix using the factory deck?
I have the same question as IAN. I have an 2004 pontiac grand prix with the monsoon system. “when putting in new rear speakers since gm runs a positive and negative for highs and lows. would i put both positives and both negatives together since my new speaker is a 4 way and only has one neg and one positive tab or would i just run one of the freq set?” anyone?
when putting in new rear speakers since gm runs a positive and negative for highs and lows. would i put both positives and both negatives together since my new speaker is a 4 way and only has one neg and one positive tab or would i just run one of the freq set?
does anyone know what color the 2 wires are for the steering wheel controls. i need the data and the ground. i cant seem to find them.
Justin, ask and you shall receive: 2007 Pontiac Grand Prix Car Stereo Wiring Diagram
I’m trying to find out if the wiring for the 04 grand prix is the same as the 07. If not is there anyone that can tell me which wire is the constant and which one is the ground?
I got a 04 grand prix… im trying to get a clarion head unit… i ordered the interface for the chimes and all that… need help on wiring the harness from the stereo to the interface and help will be much appreciated!
I have a 2005 Pontiac Grand Prix, The right rear speaker isn’t working and when I started to follow the wiring FROM the speaker I found that it is connected to a small box which is snapped to the rear deck about 8 inches away from the speaker. This small box is not connected to anything else and has no other plugs on it thus meaning that the speaker is not hard wired to the sound system. Any input would be greatly appreciated. Thanks, Chuck
AJ King, technically you could connect your 2005 Pontiac Grand Prix amplifier turn on wire to the radio switched 12v+ wire. That way your amplifier is on whenever your 2005 Pontiac Grand Prix is on and off whenever your 2005 Pontiac Grand Prix is off. Just make sure to run an in-line fuse holder with a 1-amp fuse on the amplifier turn on wire. Hope this helps. Good Luck.
I’m trying to install an aftermarket amp/subwoofers to my 05 Grand Prix GTP, factory deck. where is the best place to connect the lead wire from the aftermarket amp? Any correct information would be greatly appreciated.
I was just analyzing the wiring behind my factory radio to ensure that I received the correct wiring harness to hook up my Pioneer radio. I noticed that there was another set of wires running into the factory unit. Are these special wires that need to be considered or are they just the wires that run to the radio controls on the steering wheel?
it is not that hard but Modified Life was right, it needs special wiring. sorry.
Jason, some vehicles can play an MP3 player using the audio in cable but it may require some external module or special wiring. Unfortunately, we don’t have the specific information you’re looking for but maybe someone from the Modified Life community can post that information here. Hope this helps. Good luck.
I want to play my mp3 player in my car using an Audio In cable. Would it be possible to find an Audio In port on the back of my stereo? How difficult would it be to take the dash apart to get to the stereo? Thanks, Jason