Operation

Constant voltage is supplied from the main battery through the junction block and the black/red wire to the relay. Constant voltage is also supplied by the auxiliary battery to the relay and through the red feed wire to the camper. When the ignition switch is turned to RUN, current flows through the heater/air conditioning fuse in the fuse block, through the convenience center, and across the coil in the relay. The relay energizes and the contacts close. The auxiliary battery can now be charged by the vehicle's charging system.

If voltage is not reaching the camper unit feed wire, check the following:
1. Auxiliary battery state of charge.
2. Battery and convenience center ground wires.
3. Heater fuse by operating the heater or A/C with the engine running.
4. Fusible links.
5. Feed wire in-line fuse.