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electrical SyStem
Inspection and maintenance
If the 12-volt power converter is not working (auxiliary battery not being charged) check
the reverse polarity fuse(s) in the Load Center. There are no customer serviceable parts
inside the converter case and the manufacturer’s warranty will be void if the case has been
removed. If you have further concerns contact your dealer.
12-volt DC System
The majority of your recreation vehicle lighting is powered by 12-volt electricity. The 12-
volt DC system is composed of components that will operate when the following conditions
are met:
Power is supplied by the tow vehicle alternator when the engine is running and the
7-way trailer plug is connected. This powers the RV’s running lights, brake lights, turn
signals and brakes. In addition, the 7-way trailer plug provides a common ground and
a 12-volt charge line to charge the auxiliary battery.
The converter will supply interior 12-volt DC power when the power cord is plugged
into campground power. The converter will also charge the RV battery in most
situations. (Refer also to the Battery Disconnect section)
The auxiliary battery powers many interior 12-volt components including the lighting
xtures, water pump, 12-volt motors, 12-volt appliances, etc. It also powers the
breakaway switch.
12-volt Fuse Panel
The 12-volt fuses are located in the Load Center. They are labeled to indicate fuse sizes,
positions and the components powered. At the beginning of camping season, inspect all the
12-volt fuses in the Load Center and replace as needed.
Replacing a fuse
Before replacing a fuse, always turn off electrical component(s) protected by it.
1. Disconnect the shore power cord.
2. Disconnect the recreation vehicle auxiliary battery main negative battery cable.
3. Remove the fuse panel cover to check fuses.
4. Pull the fuse straight out of the fuse block. If the fuse is not blown, something else must
be causing the problem. Please contact your dealer for further assistance.
5. Insert a new fuse of the same specied voltage, amperage rating and type in the original
location. Never use a higher rated replacement fuse.
The fuse panel label should be kept permanently afxed to your recreation vehicle. The
fuses will not offer complete protection of the recreation vehicle electrical system in the
event of a power surge or spike.
Replacement fuses must be of the same voltage, amperage rating and type.
Never use a higher rated replacement fuse; doing so may cause a re by
overheating the RV wiring.
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