1991 Toyota Corolla Car Stereo Radio Wiring Diagram

Whether your an expert installer or a novice enthusiast with a 1991 Toyota Corolla, an automotive wiring diagram can save yourself time and headaches. One of the most time consuming tasks with installing a car stereo, car radio, car speakers, car amplifier, car navigation or any mobile electronics is identifying the correct wires for a 1991 Toyota Corolla.

The Modified Life staff has put their heads together to create an invaluable resource containing car stereo wiring diagram, car wiring diagram and radio wiring diagram. Feel free to use any 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 diagrams listed on our site are submitted by our Modified Life community. Use of the wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 1991 Toyota Corolla.

If you can’t find your car stereo wiring diagram or car radio wire diagram on Modified Life, please feel free to post a car wiring diagram request (Car Stereo Wiring Diagram Request Page) and we’ll do our best to find you the information you need for your mobile installation.

If you would like to help the Modified Life community by adding a car stereo wiring diagram or car radio wiring diagram to our resource, please feel free to email us using our contact form.

1991 Toyota Corolla Car Stereo Radio Wiring Diagram.

Radio Constant 12V+ Wire: Blue/Yellow
Radio Switched 12V+ Wire: Gray
Radio Ground Wire: Brown
Radio Illumination Wire: Green
Radio Dimmer Wire: N/A
Radio Antenna Trigger Wire: N/A
Radio Amp Trigger Wire: N/A
Front Speakers Size: 4″ Speakers
Front Speakers Location: Dash
Left Front Speaker Wire (+): Pink
Left Front Speaker Wire (-): Purple
Right Front Speaker Wire (+): Purple
Right Front Speaker Wire (-): Light Green
Rear Speakers Size: 4″ Speakers
Rear Speakers Location: Rear Deck
Left Rear Speaker Wire (+): Black
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Red
Right Rear Speaker Wire (-): White

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8 Comments

  • Reply pat July 11, 2008 at 1:31 pm

    pretty thanks, i was so tired to play with electricity you help me a lot !!

  • Reply ModifiedLife July 11, 2008 at 3:22 pm

    Pat, we’re glad we could help you with your car stereo wiring diagram needs.

  • Reply Robert November 18, 2008 at 8:20 pm

    thank you! thank you! thank you!

  • Reply ModifiedLife November 24, 2008 at 5:10 pm

    Robert, we’re glad we could help you with your car stereo wiring diagram needs.

  • Reply ESTAUNLICH February 12, 2010 at 1:36 am

    Helped a bit, but the switched +12v wire isn’t gray. At least not for me.

  • Reply Milly February 16, 2010 at 6:55 am

    Two other sources have told me that the rear speakers are 5.25″ not 4″. What size stero system should I buy for this model car?

  • Reply mitch January 24, 2013 at 9:24 pm

    What is the 1991 Toyota Corolla constant 12v wire and what is the switched 12v wire?

  • Reply ModifiedLife February 8, 2013 at 1:21 am

    Mitch, the 1991 Toyota Corolla constant wire is blue/yellow and the switched wire is gray. Hope this helps. Good luck with your 1991 Toyota Corolla stereo installation.

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