http://www.motorcraftservice.com
Diagrams of a 1994 Ford Escort can be found in a factory service repair manual. These book explain in detail every part of the vehicle using picture, diagrams, and step by step instructions.
The Modified Life staff has taken all its Ford F250 Truck car radio wiring diagrams, Ford F250 Truck car audio
You can find them on the Autozone web site.
Buy a repair manual like Chilton's they have wiring and vacuum diagrams.
http://www.fordification.com/ Diagrams for F100's 67-72
my diagram is a sticker right inside the engine compartment (ford) autozone has most of the diagrams on their site, too.
In the owners manual
for example haynes ford mk3
You can go to zx2racing.com and find the skematics there.
Most repair manuals have the wiring diagrams in them.
The factory keyless entry code for a Ford Explorer is ( on a card that comes with the owners manual )
Fuse diagrams for most vehicles can be found in the owners manuals. Please check with your dealer for a manual if you do not have one.