UNITY MOTORHOME ELECTRICAL SYSTEM OPERATION
99
12 VOLT DC SYSTEM
The 12 volt DC power system in your motorhome consists
of the following two distinct, but interconnected, battery
systems
CHASSIS BATTERY
The chassis battery
1
operates the vehicle starter,
vehicle accessories and all vehicle controls on the
instrument console, such as the heater fans, exterior
lights, horn, speed control, windshield wipers, etc.
Disconnect the chassis battery cable when parking the
motorhome for an extended period of time. Refer to the
chassis operator’s manual in the Motorhome Information
Kit for the chassis battery quick disconnect location.
ᘐ NOTICE
Disconnecting the battery cables from the chassis
battery can clear the engine/transmission logic
modules. These modules will automatically
re-calibrate when you reconnect the battery and
start the engine.
CHASSIS BATTERY LOCATION
The chassis battery is located under the driver’s side
cab floor
1
.
1
ᘐ NOTICE
A 150 amp fuse
2
located on the side of the
chassis battery, protects 12 volt DC coach power
system.
1
2
COACH BATTERIES 12 VOLT DC
POWER SUPPLY
The coach batteries
3
supply power to all the 12
voltDC lights and equipment in the living area of your
motorhome. This includes the roof vents, refrigerator
(when operating in 12 volt DC mode), generator starter,
water pump, furnace fan, interior lights, holding tank,
water level gauges, etc.
The coach fuse block and the fuse for the solar panel
are located inside the chassis battery compartment.
Inside the fuse block, a cable
4
connects the Solar
Panel Fuse.
4
ᘐ CAUTION
Fuses must be replaced with the same rating
and same type.
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