3500 4x4 Pickup L6-359 5.9L DSL Turbo (1996)
Parking Brake Warning Switch: Description and Operation
Brake Warning Lamp Switch
CIRCUIT OPERATION
Circuit G9 provides an input to the Controller Anti Lock Brake (CAB). The CAB receives the input when either the ignition switch is in the
START position, or the park brake warning lamp switch in the hydraulic combination valve CLOSES.