There is no such thing as a free wiring diagram
Buy a Haynes or a Chilton manual. They will have all the wiring daigrams that you will need.
Wiring diagram of what component?
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.
A Ford Ranger pickup truck wiring diagram can be obtained from most Ford dealerships. The wiring diagram can also be found at most auto-parts stores.
wiring diagram for mass airflow sensor
wiring diagram for a 3 way motion light sensor
you can purchase a "haynes" manual. these include full wiring diagrams including sensor locations. most auto store's and their websites have them.
air flow sensor wiring diagram
spark plugs wiring diagram
i would like a wiring diagram for a Honda civic o2 sensor
wiring diagram for 98 ford ranger door alarm
No such thing as a free wiring diagram. Not one that you would trust anyway. Try this: http://free-auto-repair-advice.blogspot.com/2007/11/finding-repair-information-you-need-at.html