Mopar 56054001AD Switch-Stop Lamp

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When the brake pedal is applied, the pedal arm moves away from the switch and a spring-loaded plunger closes the circuit to the brake lights. Models equipped with cruise control use a dual-purpose brake light switch that also deactivates the cruise control system when the brake pedal is depressed.

To troubleshoot, check the brake light fuse and replace if necessary. Verify voltage to the switch and repair any open or short in the power wire. If the brake lights still don't come on, test for continuity between the switch terminals when the brake pedal is applied and replace the switch if continuity is not detected. If there is continuity but the brake lights still don't come on, check for power to the brake light bulb sockets and replace the bulbs if voltage is present. If voltage is not available, check the wiring between the switch and the brake lights for an open circuit and repair as necessary.