Parking Brake Warning Switch: Description and Operation

CIRCUIT OPERATION
Brake Switch Input
Circuit L50 is an input to the Controller Anti Lock Brake (CAB). The L50 connects to cavity 13 of the CAB connector. Circuit L50 is spliced in with the stop lamps, and is used to provide the CAB with information on when the brakes are being applied.

Park Brake Switch Input
Circuit G9 provides a park brake switch input to the Controller Anti-Lock Brakes (CAB). This circuit connects to cavity 14 of the CAB.