Backup Lamp: Description and Operation

In the RUN position, the ignition switch connects circuit A1 to circuit A38. The A38 circuit connects from the ignition switch to the fuse block and powers a BUS bar for fuse 11, a 10 amp.

Circuit A1 is protected by a fusible link located near the auxiliary jumper post on the left toe box.

Circuit F20, from fuse 11, connects to the back-up lamp switch. When the operator places the vehicle in REVERSE, circuits F20 and L1 are connected. The L1 circuit connects from the switch and supplies voltage to the back-up lamps.

Ground for the lamps is supplied on circuit Z1 and terminates at the rear body ground.