6-9
SECTION 6
ELECTRICAL SYSTEMS
12-VOLT DC SYSTEM
The DC voltage system consists of the chassis
battery and the 12-volt auxiliary batteries.
Chassis (Starting) Battery
The chassis battery is used solely to operate
the engine starter and all automotive accessories
and controls found on the instrument panel. This
includes the horn, speed control, all exterior
lights, radio, windshield wipers, rear auto heater
fan, etc.
House Batteries
The house batteries supply current to all 12-
volt equipment located in the living area of the
motor home. This includes interior lights, range
exhaust fan, furnace fan, water pump, water level
and holding tank gauges, 110-volt generator
starting, refrigerator and bath roof vent fan. The
house battery may also be used to start the engine
if the automotive battery is dead. Refer to “Aux.
Start Switch.”
The house batteries are automatically charged
by the engine alternator when the engine is
running.
House 12-Volt Circuit Breakers
All 12-volt circuits and equipment in the
coach (house) area of the motor home are protect-
ed by a circuit breaker panel. When a circuit is
overloaded or a short develops in any part of the
system, a breaker will shut down that circuit. If
this happens, turn off all affected lights or appli-
ances and reset the breaker.
A label on the panel states the amperage rating
and circuit protected for each breaker.
The house breaker panel is mounted behind a
small door, below the refrigerator.
12-Volt Automotive Circuit Breakers and
Fuses
The 12-volt automotive circuit breakers and
fuses are located on a panel on the firewall
beneath the left side of the dash, ahead of the
driver’s left foot while seated in the driver seat.
To remove the protective cover, turn the twist
lock to the left, then pull the cover outward and
up.
SOLAR CHARGER PANEL
The 10-watt roof-mounted solar charger
panel uses the sun to help keep your batteries
charged. A charger indicator light is located on
the OnePlace monitor panel in the galley area
near the dinette table and thermostat or range
hood monitor panel.
The light will glow red when the solar panel
is charging the coach batteries. The greater the
rate of charge, the brighter the light. When the
batteries reach full charge the light will gradu-
ally dim, then darken.
House 12-Volt Breakers
