Most auto parts stores sell aftermarket manuals with this information. There are also online sources for a nominal fee. See links for two of them.
www.installdr.comthey have wiring harness diagrams for all makes
WIRING DIAGRAMS TOYOTA WIRING DIAGRAMS TOYOTA
Go to autozone.com. They have wiring harness diagrams for free download for most vehicles. If found all wiring diagrams for my 88 Silverado.
Buy the repairing book of Haynes.. it has everything in..
When making changes to a car it is important to have a diagram of the area. The wiring harness diagram to a Pontiac Grand Am can be found in its maintenance manual.
2006 Dodge Dakota - Where do i find the trailer wiring harness
wher can i find a free VL commodor wiring harness diagram
for the ECM, sorry i left that part out
When working on anything electrical it is important to have a diagram for safety reasons. The wiring diagram for a 1995 Toyota pickup radio can be found in the maintenance manual.
This is not really an answer,but I have a problem with a wiring harness on my 93 caravan also. I have not gotten to the point of solving the problem, but was wondering if you got your problem solved and if you found a diagram and where did you get your wiring harness? Another searcher!!!!
You can find a wiring diagram that shows you how to hook up a trailer wiring harness on a 1998 Pontiac Transport at most auto parts stores. A Pontiac repair manual should have the diagram in it.
Color coded instructions on how the wiring should go in my pickup truck ignition