Question: Where can I find a 1991 Cadillac Allante stereo wiring diagram, and what are the 1991 Cadillac Allante radio wiring harness color codes?
If you’re planning to upgrade the radio in your 1991 Cadillac Allante or troubleshoot issues with your car stereo, this guide is here to help!
Our comprehensive 1991 Cadillac Allante 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 1991 Cadillac Allante.
In This Guide
1991 Cadillac Allante Stereo Wiring Diagram
This 1991 Cadillac Allante stereo wiring chart shows you all the 1991 Cadillac Allante 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 | Chassis |
Use a Wiring Harness  and Dash Kit  for an Easy Install! |
|
| Illumination Wire | N/A |
| Dimmer Wire | N/A |
| Antenna Trigger Wire | N/A |
| Amplifier Turn-On Wire | N/A |
| Amplifier Mute Wire | N/A |
| Amplifier Location | N/A |
1991 Cadillac Allante Speaker Wiring Guide
This 1991 Cadillac Allante 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 1991 Cadillac Allante 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 |
| Left Subwoofer Positive Wire (+) | N/A |
| Left Subwoofer Negative Wire (-) | N/A |
| Right Subwoofer Positive Wire (+) | N/A |
| Right Subwoofer Negative Wire (-) | N/A |
1991 Cadillac Allante Speaker Sizes and Locations
This 1991 Cadillac Allante speaker guide includes speaker sizes, speaker locations, and helpful info on speaker upgrades. Use this chart to find out what size speakers fit your 1991 Cadillac Allante.
| 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 | 3″ Depth |
| Front Speaker Location | Front Doors |
| Rear Tweeter Size | N/A |
| Rear Tweeter Depth | N/A |
| Rear Tweeter Location | N/A |
| Rear Speaker Size | 6″ x 9″ 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 1991 Cadillac Allante 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!
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3 thoughts on “1991 Cadillac Allante Audio Wiring Diagram”
how do you remove the radio in a 1991 cadillac allente?
I recently purchased a 91 Cadillac Allante. Drove it home and took it out a few times. Then the car sat in my garage for about 3 weeks and when I went to start it the battery was dead. Removed the battery and charged it and put it back in. Now when I turn the key to start it the headlight comes on and that is the only thing that happens. Won’t turn over, no click, nothing. Do I need to reset something or any suggestions?
Harl, it sounds like your battery is not holding a charge. Replace your old battery with a brand new car battery and you should be good to go. We recommend a Optima Red Top Car Battery as it is designed to deliver the strongest 5-second ignition power for a reliable start-up every time. Hope this helps. Good luck with your 1991 Cadillac Allante troubleshooting.