Brake Lamp: Description and Operation
CIRCUIT OPERATIONCircuit F32 from fuse 7, a 20 amp in the Power Distribution Center (PDC) connects to the stop lamp switch.
When the operator presses the brake pedal, the stop lamp switch CLOSES connecting circuits F32 and L50. Circuit L50 connects to the stop lamps and the Center High Mounted Stop Lamp (CHMSL).
Ground for the lamps is provided on circuit Z1.