Ford Bronco 1991 tailgate key window switch inoperative with no power to circuit breaker #12 on Ford Bronco

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some 1991 Ford Bronco owners report experiencing issues with the tailgate key window switch, particularly when there is no power to circuit breaker #12. These owners often find that the LT.BLUE/BLACK wire should have power from Circuit Breaker #14 when the key is in the ON, ACCESSORY, or RUN positions. A common issue cited is a bad current path, which may necessitate jumper wiring from the breaker to the tailgate key switch. Additionally, some owners discover broken or cracked wires, especially if both switches fail simultaneously, indicating potential wiring issues in the tailgate. Others note that the dash switch only receives power when the ignition is on, while the tailgate key switch is always hot from the battery. To troubleshoot, some owners emphasize the importance of testing the wiring and considering a failed actuator as a potential cause for the switch's inoperability. A systematic approach to diagnosing these electrical issues is essential for effective resolution.

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