Ford 3G Alternators - Tuff Stuff The Ford 3G alternators utilize an internal voltage regulator and output 150 or 225-amps depending upon part number. They are available in a wide range of finishes including chrome plated, polished aluminum, stealth black, powder coated colors and Factory Cast PLUS+ finishes. Ford Ranger Reverse Camera Wiring Diagram - Wiring Diagram Ford 3g Alternator Diagram Wiring Diagram. The ranger was introduced as the replacement for the ford courier. Ford ranger reverse camera wiring diagram. Please verify all wire colors and diagrams before applying any information. Ford ranger radio wiring diagram. Save up to 5 when you buy more.