Whether your an expert Toyota 4Runner mobile electronics installer, Toyota 4Runner fanatic, or a novice Toyota 4Runner enthusiast with a 1990 Toyota 4Runner, a car stereo wiring diagram can save yourself a lot of time. Automotive wiring in a 1990 Toyota 4Runner 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 1990 Toyota 4Runner.
The Modified Life staff has taken all its Toyota 4Runner car radio wiring diagrams, Toyota 4Runner car audio wiring diagrams, Toyota 4Runner car stereo wiring diagrams, Toyota 4Runner car radio wiring schematics, Toyota 4Runner 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 1990 Toyota 4Runner part or component.
Feel free to use any Toyota 4Runner 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 Toyota 4Runner wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 1990 Toyota 4Runner.
Questions
If you have any questions pertaining to the audio system in the 1990 Toyota 4Runner, 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
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Adding More Information
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1990 Toyota 4Runner Car Stereo Wiring Schematic
Car Radio Battery Constant 12v+ Wire: Blue/Yellow or Blue/Black
Car Radio Accessory Switched 12v+ Wire: Gray
Car Radio Ground Wire: Brown
Car Radio Illumination Wire: Green
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: 4″
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Pink
Left Front Speaker Negative Wire (-): Purple
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Blue
Car Audio Rear Speakers Size: 5 1/4″
Car Audio Rear Speakers Location: Side Panels
Left Rear Speaker Positive Wire (+): Black
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Red
Right Rear Speaker Negative Wire (-): White
 
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Hi just wondering if you guys know what the wiring diagram is for a 1985 toyota 4 runner radio?
Cheers Matt
Matthew, ask and you shall receive: 1985 Toyota 4Runner Car Stereo Wiring Diagram
Hi, thanks for providing this information. I was given a working Panasonic MP3 CD Player/Receiver taken out of an old Mercedes. My mechanic tried to install it in my 1990 Toyota Camry Wagon and although there is power to the unit and the face plate lights up with all the standard digital inidcators, no sound comes out. The car speakers are fine, as I could play audio cassette tapes in it beforehand. Any suggestions? Thanks for your help. Kiran
Kiran, your 1990 Toyota 4Runner may have a factory amplifier that needs to be turned on by your after market radio. The car stereo amplifier trigger wire has to be wired up to turn on your factory amplifier. Unfortunately, we don’t have this information but maybe someone from the Modified Life community can post that information here. Hope this helps. Good luck.
hi, ive installed a DVD player into my 90 4runner all wires a correct as ive transfered all wires 1 by 1 from the previous stereo. but there is no power going to the unit ive installed alot of systems but this has got me stuffed on y its doing this… ive checked all fuses amd still noting… any help would be great
Adam, it sounds like you blew out a fuse or two. It is possible for your radio to eject or load a CD but not turn on. This is because these functions are powered by different wires (constant wire and switched wire). Double check ALL your fuses and you’ll probably find a blown fuse somewhere. Sometimes when you short out your radio fuse, other fuses may also blow out. Hope this helps. Good luck.