Park, Tail and Marker Lamps

The park, tail, and marker lamps, including the license lamps, are illuminated when the headlamp switch is placed in the PARK or HEAD position. The PARK fuse in the body control module (BCM) supplies battery positive voltage to the headlamp switch. When the headlamp switch is placed in the PARK or HEAD position, the headlamp switch supplies voltage to the park lamp supply voltage circuit. The park lamp supply voltage circuit goes from the headlamp switch, to the BCM, and then to the park, tail, and marker lamps. The park, tail, and marker lamps receive a ground at G101, G401, or G403.