Question: Where can I find a 2003 Cadillac Deville stereo wiring diagram, and what are the 2003 Cadillac Deville radio wiring harness color codes?
If you’re planning to upgrade the radio in your 2003 Cadillac Deville or troubleshoot issues with your car stereo, this guide is here to help!
Our comprehensive 2003 Cadillac Deville 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 2003 Cadillac Deville.
In This Guide
2003 Cadillac Deville Stereo Wiring Diagram
This 2003 Cadillac Deville stereo wiring chart shows you all the 2003 Cadillac Deville 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.
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Battery Constant Power Wire (12v+) | Orange |
| Accessory Switched Power Wire (12v+) | Yellow |
| Ground Wire | Black |
Use a Wiring Harness  and Dash Kit  for an Easy Install! |
|
| Illumination Wire | Gray |
| Dimmer Wire | Brown |
| Antenna Trigger Wire | Pink |
| Amplifier Turn-On Wire | N/A |
| Amplifier Mute Wire | N/A |
| Amplifier Location | N/A |
2003 Cadillac Deville Speaker Wiring Guide
This 2003 Cadillac Deville speaker wiring guide provides all the speaker wire colors and speaker locations you need for an upgrade or replacement. Whether you are installing new speakers or troubleshooting your factory setup, this 2003 Cadillac Deville chart makes it easy to identify each wire and where it connects. If you don’t see the car speaker wiring info you need, feel free to ask your question at the bottom of the page — we are here to help!
| Car Stereo Wire Function | Wire Color Code |
|---|---|
| Dash Center Speaker Positive Wire (+) | N/A |
| Dash Center Speaker Negative Wire (-) | N/A |
| 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 |
| 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 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 |
| 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 |
| Subwoofer Positive Wire (+) | N/A |
| Subwoofer Negative Wire (-) | N/A |
2003 Cadillac Deville Speaker Sizes and Locations
This 2003 Cadillac Deville speaker guide includes speaker sizes, speaker locations, and helpful info on speaker upgrades. Use this chart to find out what size speakers fit your 2003 Cadillac Deville.
| 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 | 6.5″ Speakers |
| Front Speaker Depth | 2.5″ Depth |
| Front Speaker Location | Front Dash |
| Rear Tweeter Size | N/A |
| Rear Tweeter Depth | N/A |
| Rear Tweeter Location | N/A |
| Rear Speaker Size | 5.25″ Speakers |
| Rear Speaker Depth | 4″ Depth |
| 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 2003 Cadillac Deville 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 Cadillac Deville 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!
14 thoughts on “2003 Cadillac Deville Radio Wiring Diagram”
hey i was wondering if anyone had step by step derections on taking out the stock radio on a 2003 Cadillac DaVille
locate the two metal clips on the sides of the stereo and push them in, those clips will release the deck!!!
Rudy, thanks for the 2003 Cadillac Deville stereo removal information contribution.
what size is the back center speaker???
The back sub speaker is a 9.5″ or so I heard. Apparently the hole accepts up to 11.5″ speaker…still haven’t found the rms power, but I believe it is a DVC sub.
Evan, thanks for the 2003 Cadillac Deville subwoofer size information contribution.
You will need GMOS-06 Wire Harness to keep your onstar and all your chimes.
Reggie, thanks for the 2003 Cadillac Deville stereo wiring information contribution!
Where would i find the remote wire for the 2003 cadillac deville because im trying to install an aftermarket sub and sub with the original radio?
Frenchie, technically you could connect your 2003 Cadillac Deville amplifier turn on wire to the radio switched 12v+ wire. That way your amplifier is on whenever your 2003 Cadillac Deville is on and off whenever your 2003 Cadillac Deville 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 with your 2003 Cadillac Deville amplifier and subwoofer installation.
what size speakers come stock in the 2003 cadillac deville?
Grant, here are your 2003 Cadillac Deville speaker sizes:
Car Audio Tweeter Speaker Size: 1″ Tweeters
Car Audio Tweeter Speaker Depth: 1″
Car Audio Tweeter Speaker Location: N/A
Car Audio Front Speakers Size: 6 1/2″ Speakers
Car Audio Front Speakers Depth: 2 1/2″
Car Audio Front Speakers Location: Doors
Car Audio Rear Speakers Size: 5 1/4″ Speakers
Car Audio Rear Speakers Depth: 4″
Car Audio Rear Speakers Location: N/A
Car Audio Rear Speakers Size: 6″ x 9″ Speakers
Car Audio Rear Speakers Depth: 5″
Car Audio Rear Speakers Location: N/A
Car Subwoofer Speaker Size: 8″ Subwoofer
Car Subwoofer Rear Speakers Depth: 4″
Car Subwoofer Rear Speakers Location: N/A
Hope this helps. Good luck with your 2003 Cadillac Deville speaker installation.
Hi, My 2003 Cadillac DTS has the AM-FM GPS radio unit which is completely. I’ve removed the plastic frame from around the radio and AC control unit but can’t figure out how to remove the radio. Can anyone please explain how to do this? Thanks.
anyone know what the wire colors are the steering wheel control wires in a 2003 cadillac deville?