Ford Bronco Tailgate Power Window Alternate Wiring Diagram with SPDT Relays

This is a hand-drawn/edited wiring diagram (credited to "eighty5eddie") showing an alternate wiring scheme for a Ford Bronco power tailgate window circuit. Power originates from fuse panel position 14 (20A circuit breaker, hot in ACC or RUN) via a LB/BK wire to the master tailgate window switch on the dash, and separately from a 10-gauge wire run from the battery to the driver's side taillight area to feed two SPDT relays. Each relay (with pins labeled 85, 30, 87a, 87, and 86 and grounded 87a/coil terminals) controls the up and down motor circuits. The master switch outputs P/LG and PK/LB wires to the relay coils; a BK/W wire and circuit 517 connect to the key-operated tailgate window switch on the tailgate itself. A T/BK wire feeds the tailgate latch switch, which is noted as "open when tailgate is not fully closed," acting as a safety interlock. Y/R and R/Y wires connect the relays and latch switch to the tailgate power window motor. The diagram notes "no ground needed" at the master switch. Wire color codes, relay pinouts, and the safety-latch logic are the key takeaways for anyone rewiring a failing tailgate window circuit with relays.