What relay terminal colors are used in this tailgate window relay mod?

Per the handwritten note: pin 30 = blue, 85 = black, 86 = white, 87 = yellow, 87A = red.

Where does the tailgate window circuit get its power in this diagram?

From the fuse panel, fuse position 14 with a 20A circuit breaker (hot in ACC or RUN) via an LB/BK wire, plus a 10-gauge feed wire run to the driver's side taillight area powering the relays.

What type of relays are used in the modification?

Two SPDT relays with terminals 85, 30, 87a, 87 (and 86 shown on the lower relay), one for each direction of the tailgate window motor.

What does the tailgate latch switch do in this circuit?

The diagram notes the tailgate latch switch is open when the tailgate is not fully closed, so the power window circuit is interrupted unless the tailgate is latched.

Home/ Registry/ Ford/ Bronco/ 1992-1996/ “Black Beauty”/ Photo supermotors.net/registry/media/1157893

Ford Bronco Tailgate Window Relay Mod Wiring Diagram - SPDT Relay Pinout

DIY tailgate window and taillight SPDT relay wiring diagram printout with crimp connectors on workbench

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User-made tailgate/taillight wiring diagram (eighty5eddie) using two SPDT relays for tailgate window up/down and tailgate-power interlock, photographed with wire and crimp-connector supplies.

AI caption March 2020 · Photo 968 of 1068

This photo documents a tailgate power window relay modification project, centered on a printed wiring diagram credited to "eighty5eddie" (watermarked SuperMotors.net). The diagram shows a circuit fed from the fuse panel (fuse position 14, 20A circuit breaker, hot in ACC or RUN) through an LB/BK wire to the master tailgate window switch, then via P/LG and PK/LB wires to two SPDT relays (terminals 85, 30, 87a, 87, 86). Power for the relays comes from a 10-gauge wire run to the driver's side taillight area. The circuit continues through the key-operated tailgate window switch, the tailgate latch switch (open when the tailgate is not fully closed), and finally the tailgate power window motor, with wire colors such as BK/W, Y/R, and R/Y noted. A handwritten note gives the relay socket pigtail color code: 30=blue, 85=black, 86=white, 87=yellow, 87A=red, with a pin-layout sketch. Also pictured are the physical parts used: a 5-pin relay with wired socket, Handypack HP2030 12-10 gauge ring terminals, Storehouse item 66595 16-22 gauge watertight heat-shrink butt connectors, Star brite Liquid Electrical Tape (4 fl oz), red heat-shrink tubing, and a tailgate window bracket/track. A reader can learn how to wire dual relays to protect and power a Ford Bronco tailgate window circuit.

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Frequently asked questions

What relay terminal colors are used in this tailgate window relay mod?: Per the handwritten note: pin 30 = blue, 85 = black, 86 = white, 87 = yellow, 87A = red.
Where does the tailgate window circuit get its power in this diagram?: From the fuse panel, fuse position 14 with a 20A circuit breaker (hot in ACC or RUN) via an LB/BK wire, plus a 10-gauge feed wire run to the driver's side taillight area powering the relays.
What type of relays are used in the modification?: Two SPDT relays with terminals 85, 30, 87a, 87 (and 86 shown on the lower relay), one for each direction of the tailgate window motor.
What does the tailgate latch switch do in this circuit?: The diagram notes the tailgate latch switch is open when the tailgate is not fully closed, so the power window circuit is interrupted unless the tailgate is latched.
What connectors and supplies are shown for the install?: Handypack HP2030 ring terminals (12-10 gauge, 5/16" stud, 9 pcs), Storehouse item 66595 16-22 gauge watertight heat-shrink butt connectors (10 pc), and Star brite Liquid Electrical Tape (4 fl oz).