Order one through your Toyota parts department at the dealer. You want the Supplimental Electrical Wiring book. It contains schematics you can follow with a highliter to trace out where the wires go. IT also gives color code abbreviations to tell what color the wire is: for instance, "Bl/Y" is blue striped yellow wire. Sometimes they make mistakes in them (due to translation from Japanese to Engrish, lol)
http://www.modifiedlife.com/1990-honda-prelude-car-radio-stereo-wiring-diagram/
You can find a stereo wiring diagram for your 1990 Chevy Cheyenne 2500 at most Chevrolet dealerships. The stereo wiring diagram will be in Chevrolet service manuals at your local library.
installer.com
ok thanks
== == Try the website www.the12volt.com it is a car audio website but has wiring diagrams for all vehicles. Hope it helps
Purchase a stereo install dash kit, you're best bet is eBay. Search in eBay for a "stereo install dash kit 1990 corolla". Should be about twenty bucks.
wen i bought the pickup the person had cut the stock stereo plug off and tried wiring it back and has it all messed up so now i have to rewire the stereo but i need to know what wires are wat
Standard 2 Piece Harness Up To Late 1990
need a wiring diagram for a 1990 ls 400 need a wiring diagram for a 1990 ls 400
wiring diagram
Go to Google and type in "The Install DOctor". Go to the install doctor car stereo installations link and then once your on the site go to "quick radio wiring info". The wiring diagram is there. All color coded and in detail.
google it , i did and got exactly what i needed , also it helps to know the stereo type for reference --JAS