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2003 Pontiac Grand Prix Stereo Wiring Diagram


Whether your an expert Pontiac Grand Prix mobile electronics installer, Pontiac Grand Prix fanatic, or a novice Pontiac Grand Prix enthusiast with a 2003 Pontiac Grand Prix, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 2003 Pontiac Grand Prix 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 Pontiac Grand Prix headlight bulb size you need for your low beam or high beam and save time. Also, find your other car light bulb sizes including your fog light, reverse light, turn signal, brake light and more. It’s that easy!

The Modified Life staff has taken all its Pontiac Grand Prix car radio wiring diagrams, Pontiac Grand Prix car audio wiring diagrams, Pontiac Grand Prix car stereo wiring diagrams, Pontiac Grand Prix car radio wiring schematics, Pontiac Grand Prix 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 Pontiac Grand Prix part or component.

Feel free to use any Pontiac Grand Prix 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 Pontiac Grand Prix wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 2003 Pontiac Grand Prix.

Questions

If you have any questions pertaining to the audio system in the 2003 Pontiac Grand Prix, 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 Pontiac Grand Prix Car Stereo Wiring Diagram

Application Wire Color
Car Radio Battery Constant 12v+ Wire Orange
Car Radio Accessory Switched 12v+ Wire 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
arrow 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 Stereo Antenna Trigger Wire Violet
arrow Use an Amp Integration Harness to Connect Your Factory Amplifier to an aftermarket radio.
Car Stereo Amp Trigger Wire Violet
Car Stereo Amplifier Location Located under the center of the rear deck in the trunk.
arrow
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
arrow
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
arrow
Rear Left Speaker Positive Wire (+) White/Green
Rear Left Speaker Negative Wire (-) Gray/White
Rear Right Speaker Positive Wire (+) White
Rear Right Speaker Negative Wire (-) Gray
arrow Use a Steering Wheel Control Adapter to Keep Your Steering Wheel Controls.

3 thoughts on “2003 Pontiac Grand Prix Stereo Wiring Diagram”

  1. Shallamar, double check ALL your fuses using an Automotive Fuse Tester because certain vehicles may have a wire tied into another circuit not labeled as car radio. You may have additional fuse boxes by the driver side of the dash, passenger side of the dash, driver kick panel, passenger kick panel, under the steering column or under the hood. If all of your fuses are good, we suggest you take your car to an experienced audio installer or mechanic and have them troubleshoot your problem. Hope this helps. Good luck with your 2003 Pontiac Grand Prix stereo troubleshooting.

  2. my 2003 pontiac grand prix gt radio all of a sudden stopped working. it has the regular factory deck in it i think by delco. i already checked the fuses everything seems fine. what could be the problem? no music comes out of my speakers. also if it helps my car has the bose speaker system.

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