You can find books at advance auto will cost about 25 dollars but it has every thing you need to work on your truck.
1985 ford f150 5.8 h.o.vacuum system diagram
a/c compresser
It is a diagram used to trouble shoot wiring concern on the vehicle. Tells you how and where the wires go.
for what size of engine ?
That would depend on which engine size you have
Get a wiring diagram and read it on the can.
Try ford-f150.big.com then go to Ask a question now online get an answer ASAP.
you need an alternator
Do you mean a SCHEMATIC diagram?
Click the link and choose your engine size.
You can get a dome light wiring diagram for the F150 from your local Ford dealership. You can also get a diagram at most auto parts or major book stores.
were is the vin on the fram of a 1985 ford f150