You cant only way is to find a owners manual for your year model truck or go to O'reillys or autozone to get a manual for your vehicle Don't think that repair manuals such as you find at O'reilly's, etal, will have the fuse box diagram. You would be better off looking for an owner's manual at a local auto recycling yard (formerly known as junk yard). Or try the Ford Ranger website (you can Google it) and try to find the information there.
Owner's manual, or Library.
A diagram of what component?
http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528018f231
A wiring diagram for a 1994 Ford Ranger can be found in the Chilton's manual for that vehicle. You can also find this wiring diagram at most auto parts stores.
You can find a fuse panel diagram for a 1986 Ford Ranger XL in the owner's manual. You can also find it at select auto part stores.
where can i find a vacuum line diagram for 1989 ford 2.9 liter engine
You can view the 1999 Ford Ranger owners manual online at : www . motorcraft service . com ( no spaces ) Click on Owner Guides ( the fuses and relays section starts on page 134 , it has the diagrams and lists )
Call your local dealer.
You can find the 1999 Ford F1 50 front differential exploded view diagram at most Ford dealerships. You can also find the exploded view diagram in Ford service manuals.
Chilton's Manual?
It should be in the owners manual.
autozone.com has free online manuals