1996 Ford Bronco & F-Series Backup Lamps Wiring Diagram (Page 93-3)

This is page 93-3 of a Ford factory wiring diagram covering the Backup Lamps circuit for Bronco and F-Series trucks. It shows circuit 140 (BK/PK, black/pink wire) feeding from connector C103 (referenced on page 93-1) through splice S116 and connectors C202/C205, with branches to the automatic day/night mirrors (page 125-1), Bronco backup lamps, F-Series backup lamps (including a Flare Side variant via C401), and a trailer-tow-only trailer backup lamps relay. On the Bronco side, circuit 140 splits at S424 through connectors C405/C406 to C433 (left backup lamp) and C434 (right backup lamp), grounding through circuit 57 (BK) via splices S406/S405/S401 to ground G100 (grounds on page 10-5). The F-Series side runs through S254, S426, C406 to C433/C434 lamps, grounding through S406/S404 to G100 (page 10-4). The trailer backup lamps relay in the trailer relay box receives circuit 140 at C149 and circuit 37 (Y, yellow, 12V from power distribution pages 13-2/13-8), outputting circuit 963 (R/Y) through C149, C424, and C417 to the trailer backup lamps, with ground via 57 BK through S104 (grounds pages 10-1, 10-7). Voltage test values (12V, 12V reverse, 0V, relay energized) are annotated throughout.