Ford Power Distribution Wiring Diagram - Gasoline, Fuse Links, IAR, Trailer Tow

This is page 94, section 13-1 ("Power Distribution, Gasoline") of a Ford factory-style wiring diagram set, showing the gasoline-engine power distribution circuit. The diagram traces battery power through fuse links J, A, and B (each 12-gauge, gray). Fuse link J feeds the Integral Alternator Regulator (IAR, page 12-1) via circuits 38 BK/O and 36 Y/W through connectors C153 and C154; a callout notes part of this wiring applies to 4.9L and 7.5L engines only. Fuse links A and B feed circuit 37 Y into the engine compartment fuse box, through a 50A fuse (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). The battery positive (R circuit) also feeds the starter relay (page 20-2) and starter solenoid (page 20-2). Battery negative (BK) runs to grounds G103 (engine) and G101 (body), with grounds detailed on page 10-3. The page teaches how battery power is distributed to charging, starting, and trailer-tow circuits, including wire gauges, circuit numbers, wire colors, connector IDs, and ground locations.