1991 Cadillac Allante Car Audio Wiring Diagram

Whether your an expert Cadillac Allante mobile electronics installer, Cadillac Allante fanatic, or a novice Cadillac Allante enthusiast with a 1991 Cadillac Allante, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 1991 Cadillac Allante 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 1991 Cadillac Allante.

The Modified Life staff has taken all its Cadillac Allante car radio wiring diagrams, Cadillac Allante car audio wiring diagrams, Cadillac Allante car stereo wiring diagrams, Cadillac Allante car radio wiring schematics, Cadillac Allante 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 1991 Cadillac Allante part or component.

Feel free to use any Cadillac Allante 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 Cadillac Allante wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 1991 Cadillac Allante.


If you have any questions pertaining to the audio system in the 1991 Cadillac Allante, 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.

1991 Cadillac Allante Car Audio Wiring Diagram

Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Chassis
Car Radio Illumination Wire: N/A
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue


  • Reply Glenn November 16, 2010 at 5:25 pm

    how do you remove the radio in a 1991 cadillac allente?

  • Reply Harl December 23, 2010 at 1:53 pm

    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?

  • Reply ModifiedLife December 29, 2010 at 7:28 pm

    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.

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