Original 1992 Ford Ranger Pickup Truck Electrical & Vacuum Trouble-Shooting Shop/Service Manual. This manual was used by the factory dealership to diagnose and identify electrical and vacuum problems, and includes many diagrams.  It contains a wealth of information and will provide invaluable in-service procedures on this model. This is a used manual from a dealership (not new). Good used condition with normal wear and soiling from use in a Dealership [see photos].