Tail Lamp: Description and Operation

PARK, TAIL AND MARKER LAMPS

The park, tail and marker lamps, including the license lamps, are turned on when the headlamp switch is placed in the PARK or HEADLAMP position, or anytime the headlights are requested. The PARK LAMP fuse in the underhood junction block supplies battery positive voltage to the PARKLAMP relay switch contacts. The PARK LAMP fuse in the underhood junction block also supplies battery positive voltage to the PARKLAMP relay coil. When the park lamps are turned on the body control module (BCM) energizes the PARKLAMP relay. Current flow is from the PARKLAMP relay to their respective park and marker lamps and to ground. Ground is provided at G103, G191, G304, G401, or G464.