Parking Brake Warning Switch: Description and Operation

Parking Brake Signal Switch

The Parking Brake Signal switch indicates when the parking brake is applied. On F-250/550, Excursion and E-Series, the Parking Brake Signal switch is located under the instrument panel. On F-650 and F-750, with hydraulic brakes, the parking brake switch is mounted under the hand brake boot. With air brakes, the switch is located on the engine compartment side of the dash panel near the center of the vehicle. The Parking Brake Signal switch will deactivate speed control if the brake is applied during speed control operation.