Ford Alternator Wiring Diagrams - Carsut Simple Ford Alternator Diagram Basically, there are a few components to be recognized when you disassemble an alternator from your engine bay. The pivot bolt, terminal end nut, voltage regulator, regulator wiring plug, and brush holder. The image above is an alternator from a 2002 Ford Ranger. Ford alternator wiring diagram - MalaysiaMiniLover Early Ford alternator wiring diagram. The diagram here is a simple Ford alternator wiring circuit. It shows how Ford external voltage regulator connects to the ignition switch, starter solenoid, Ford externally regulated alternator, as well as the battery.