Things like that are a little hard to find for a 30 year old tractor.
You can possibly order or get the repair manual for the truck at a Toyota dealer's. You can also get wiring schematics from repair manuals sold in bookstores, such as the Chilton's series. Several companies offer manuals with wiring schematics online, you will find this by searching the keywords "repair manual" with the name and model of the truck.
go to www.autozone.com and click on repair manuals, enter your car's info and a free online manual specific to your make will appear with wiring schematics included...hope it helps
You can find wiring schematics at your local library as they usually have motor manuals there.
AtoZ manuals
Pick up a Haynes repair manual for the vehicle. They have wiring schematics in them.
chiltons repair manual for your car at the library.
Most repair manuals have the wiring diagrams in them.
your local library should have a repair manual with the schematice in it.
Haynes manuals have full wiring schematics for the stereo systems, along with the other basic wiring schemes for different areas of the car. Usually these manuals are cheap, and handy to have for self-service.
A free wiring schematic for this car can be found in the cars manuals. A person can also ask for its print out at an auto part store.
which wiring schematics do you need?
go to Autozone online. They have repair info as well as wiring schematics