Astro Van 2WD V6-4.3L VIN W (2001)
Backup Lamp: Description and Operation
BACKUP LAMPS
The TURN-B/U fuse in the IP fuse block supplies battery positive voltage to the normally open backup lamp switch. When driver places the gear
selector lever is in the REVERSE position, the backup lamp switch closes and the current flow is from the backup lamp switch to the backup lamps. The
backup lamps are grounded at G400 and G401.
