Tail Lamp: Description and Operation

The park lamps, including the license lamps, are turned on when the headlamp switch is placed in the PARK or ON position or anytime the headlights are requested. The PK LP fuse in the underhood fuse block supplies battery positive voltage to the LCM. When the headlamp switch is in PARK or in ON, the signal circuit of the park lamp switch of the LCM has a ground path. The LCM provides battery positive voltage to the park lamp control circuit. When the park lamps and/or the tail lamps are ON, the LCM energizes the park lamp control circuit. Current flows from the LCM to the left park lamp fuse and to the right park lamp fuse in the IP fuse block. From the fuse, the current flows to the park lamps. The left park lamps are grounded at G106 and G402. The right park lamps are grounded at G105 and G400. The LP PK R fuse supplies battery positive voltage to the license lamps. The license lamps are grounded at G400. The inadvertent power control feature prevents the park lights from remaining on more than 10 minutes if left on. If the park lights are turned on after the ignition switch has been turned OFF, or is in the ACCY position, they will remain on until turned off or the battery runs dead.