10-7
CLASS C MOTORHOME
10.3 12 VOLT DC SYSTEM
The DC voltage system in your motorhome consists of two separate and yet connected battery systems:
1. The automotive battery.
2. The auxiliary or motorhome battery.
10.3.1 AUTOMOTIVE BATTERY
It is used to operate the starter, the automotive
accessories and all the controls found on the
instrument console. Included are the auto heater
fans, the exterior lights, the horn, speed control,
windshield wipers, etc..
It is recommended that the automotive battery
cables be disconnected when parking for an
extended period of time.
Chassis
Coach
10.3.2 AUXILIARY BATTERY
These supply power to all the 12-volt lights and
equipment in the living area of your motorhome.
Included in this would be vent and exhaust fans,
refrigerator, 120-volt generator starter, water
pump, furnace fan, interior lights, holding tank
and water level gauges, etc.. These batteries
may use to jump start your engine in case the
automotive battery is dead. Refer to “Jump
Starting” in this case.
This battery is a “deep cycle” RV battery de-
signed to provide power over a long period of time
and to stand up under the frequent drain and
recharge conditions of a camping vehicle.
IMPORTANT
Removing battery cables from the
automotive (chassis) battery can clear
the engine/transmission logic modules.
These modules will recalibrate them-
selves once the vehicle is reconnected
and the engine started.
Fig. 10-9 BATTERY LOCATION
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