Marker Lamp: Description and Operation

PARK, TAIL, MARKER AND LICENSE LAMPS

The LT PRK LAMP and RT PK LAMP fuses in the rear fuse block applies battery positive voltage to both the coil and switch side of the PARK LAMP Relay. The park lamp switch on signal circuit is grounded when the head lamp switch is in the head, park or auto position for low light operation. When the BCM receives the ground input from the park lamp switch on signal circuit the BCM then applies ground to the park lamp relay control circuit. This energizes the Park Lamp Relay, applying battery positive voltage to all the park, tail marker and license lamps.