Brake Lamp: Description and Operation
Circuit A6, which is protected by a fusible link located near the auxiliary jumper post on the left toe box, supplies power to fuse 16, a 20 amp, in the fuse block.Circuit F32 from fuse 16 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, which terminates at the rear body ground.