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You can go to almost any auto parts store, and find a service manual by Haynes. It will have wiring diagrams for your vehicle, and they are simple to read and understand. They will give you wire gauge, color, and symbols for all the components.
I have one for my '94 F250 and it is detailed enough to solve any wiring problem. There are other manuals you can get, but, I think this is the least expensive, easiest to get. Good luck, Tim