Ford Bronco/F-Series Power Distribution Wiring Diagram - Gasoline, Page 94

This is page 94 of a Ford wiring diagram manual, section 13-1 "Power Distribution, Gasoline," showing the gasoline-engine power distribution circuit. The diagram traces battery power through red (R) wires to the starter relay (page 20-2) and starter solenoid (page 20-2), and through fuse links J, A, and B (all 12 gauge, gray). A callout notes one splice arrangement applies to 4.9L and 7.5L engines only. Circuit 38 BK/O (black/orange) and circuit 36 Y/W (yellow/white) feed the Integral Alternator Regulator (IAR, page 12-1) via connectors C153 (terminal B+) and C154 (terminal A). Fuse links A and B feed circuit 37 Y (yellow) into the engine compartment fuse box, through a 30A fuse at position Q labeled "With Trailer Tow Only," then through connector C105 (footnoted "all except Bronco") to the trailer battery charge relay in the trailer relay box (page 95-1). Battery negative goes through black (BK) wires to grounds G103 (engine) and G101 (body), with a grounds reference to page 10-3. The page is useful for diagnosing charging system wiring, fuse link locations, and trailer tow battery charge circuits on Ford gasoline trucks.