Principles of Operation: Stoplamps

Stoplamps are mounted in the same housings as the rear lamp.

Stoplamp functions are carried out by double filament bulbs. The low power filaments are dedicated to the parking lamp operation. Stoplamps utilize the high power filaments when the driver applies the brake pedal, closing the BPP switch.

On Grand Marquis, power is routed from the BPP switch through the multifunction switch to the stoplamps.

On Crown Victoria, power is routed from the BPP switch directly to the stoplamps.