Brake Lamp: Description and Operation
STOP LAMPSThe stop lamps consist of the center high mounted stop lamps and the LH and RH rear stop/turn lamps. The LH and RH rear stop/turn lamps are single- filament bulbs that are used as stop lamps and turn signal lamps.
The stop lamp switch receives battery voltage at all times through the STOP LAMPS fuse. When the brake pedal is pressed, the stoplamp switch closes and battery voltage is applied to the center high mounted stop lamps through the stop lamp switch signal circuit. The stop lamp switch signal circuit also sends battery voltage to the turn signal switch. The turn signal switch applies voltage to the rear stop/turn lamps through the turn signal lamp signal circuit, using the stop/turn signal lamps as stop lamps. The center high mounted stop lamp and the stop/turn signal lamps are permanently grounded.