Electrical Systems - Chassis
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2 0 0 2 N E P T U N E
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A majority of the lighting and appliances are designed to operate from 12
Volt DC (direct current) power. This is why the batteries play such an impor-
tant role in the function of the motorhome. There are exceptions with appli-
ances such as the microwave or television; however, indirectly they still oper-
ate from 12 Volt DC power, as they can be operated from the inverter. The
chassis functions (engine, transmission, dash air, etc.) are also 12 Volt DC.
With the all technological advancements taking place in the past several
years manufacturers have now incorporated electronics into these systems. It is
important to keep the 12 Volt system(s) in good working order. These systems,
with their incorporated electronics, are voltage sensitive. Some items can be
damaged if the DC voltage is not maintained within the designed specifica-
tions.
There are two separate 12 Volt systems. One is the chassis system; the other
is the house system. These two systems, for the most part, are separate from
one another. The house system does not operate engine functions; as the engine
system does not operate house functions. However, within the two systems
there are some inner connections. For example: While the motorhome is driven
the alternator on the engine will charge the house batteries. Likewise, while the
motorhome is plugged into shore power, or the generator is running, the engine
battery(s) are being charged. Each system will supply 12 Volt DC power to the
12 Volt distribution panels. The 12 Volt panel that services a majority of the
chassis system functions is located outside by the roadside front wheel. The
other panel, located in the bedroom, services the house interior functions such
as the interior lighting and appliances. You should become familiar with these
panels and the items they operate.
The two different systems, engine and house, have their own set(s) of bat-
tery(s). The engine battery supplies 12 Volt DC power to the front distribution
panel located in an outside compartment by the roadside front wheel. This
panel contains mostly engine system fuses and wiring such as headlights, tail-
light, dashboard functions, gauges, etc. The house battery(s) supplies 12 Volt
DC power to the distribution panel located in the bedroom. This panel contains
fuses for the house, interior lighting and appliances, such as the furnace and
water heater.
INTRODUCTION
Summary of Contents for 2002 NEPTUNE
Page 12: ......
Page 28: ...General Information 2 0 0 2 N E P T U N E 1 28 NOTES...
Page 32: ......
Page 73: ...Driving Safety 2 0 0 2 N E P T U N E 2 73 Rear View VIEWS Front View OM010726 OM010725...
Page 74: ...Driving Safety 2 0 0 2 N E P T U N E 2 74 Curbside View Roadside View OM010724 OM010723...
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Page 202: ...Water Systems 2 0 0 2 N E P T U N E 6 202 NOTES...
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Page 218: ...LP Gas System 2 0 0 2 N E P T U N E 7 218 NOTES...
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Page 279: ...Electrical Systems Chassis 2 0 0 2 N E P T U N E 9 279 NOTES...
Page 280: ...Electrical Systems Chassis 2 0 0 2 N E P T U N E 9 280 NOTES...
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Page 331: ...Chassis Information 2 0 0 2 N E P T U N E 10 331 MAINTENANCE RECORD...
Page 332: ...Chassis Information 2 0 0 2 N E P T U N E 10 332 MAINTENANCE RECORD...
Page 333: ...Chassis Information 2 0 0 2 N E P T U N E 10 333 MAINTENANCE RECORD...
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Page 337: ...INDEX...
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