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1987-1989 Ford F-Series/Bronco Wiring Diagram 7 of 7 - Windows, Locks, Fuel, Lights

Mitchell wiring diagram (7 of 7) for 1987-1989 Ford F-Series and Bronco covering master window control, rear/marker lamps, license, and fuel-tank sender circuits.

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This is page 12-40 from Chapter 12 (Chassis Electrical Systems) of a Mitchell repair manual, showing sheet 7 of 7 of the 1987 through 1989 Ford F-Series/Bronco wiring diagram (copyright 1994 Mitchell International). The diagram covers power window circuits, including the master window control switch (right front, left front), individual front window switches and motors with circuit breakers, and the tailgate power window switch, motor, and tailgate window unit switch, protected by fuses #14 and #12. It also covers power door lock circuits (left/right door control switches and door lock motors), interior lighting (dome, map/dome, cargo, and glove box lights, door jamb switches, warning buzzer, with Bronco vs. F150-F350 connector variations), rear exterior lighting (taillights, license lights, direction/stop lights, side and rear body marker lights, marker light relay, trailer light relay, trailer connector, and trailer electric brake connector), and the fuel system wiring (electronic control assembly, inertia switch, in-line fuel pump, fuel level senders for single and dual tanks, fuel tank select switch for gas dual tanks, and fuel tank selector valve for diesel, plus back-up light switch). Wire colors are labeled throughout (e.g., LT BLU-BLK, RED-YEL, PNK-LT GRN, WHT-RED, BRN, ORG-LT BLU), with grid coordinates 24–27 and A–E for locating circuits.

This document covers 1987-1989, which may differ from this 1994 Ford Bronco.

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Frequently asked questions

What years and models does this wiring diagram cover?
The diagram is labeled '1987 through 1989 F-Series/Bronco wiring diagram (7 of 7)', from Chapter 12, Chassis Electrical Systems (Mitchell, copyright 1994).
Which fuses protect the power window circuits in this diagram?
Fuse #14 (LT BLU-BLK wire) and Fuse #12 (BLK-WHT wire) feed the window circuits, including the master window control switch and tailgate window switch.
What wire colors run to the tailgate power window motor?
The tailgate power window motor (with circuit breaker) shows YEL-RED and RED-YEL wires, and the tailgate window unit switch connects via a TAN-BLK wire. The tailgate window switch uses PNK-LT GRN, BLK-WHT, and PNK-LT BLU wires.
What fuel system components are shown?
The electronic control assembly with inertia switch, an in-line fuel pump (PNK-BLK wire), fuel level senders for gas single tank and front/rear dual tanks, a fuel tank select switch for gas dual tanks, and a fuel tank selector valve for diesel, plus the connection to the instrument cluster via a YEL-WHT wire.
Does the diagram distinguish Bronco-specific wiring from F-Series?
Yes. Interior light connectors are marked 'BRONCO' and 'F150-F350' separately, a resistor circuit to the instrument cluster is marked '(BRONCO)', and notes call out variants like (CHASSIS CAB), (W/TRAILER), and (W/DUAL REAR WHEELS).

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