Tiffin Motorhomes Wayfarer TM 2021 Series Owner's Manual page 64

ELECTRICAL SYSTEM
NOTICE: All motorhomes are equipped with two separate electrical
systems. A 12-VOLT DC system (direct current from a battery source and
a 120-VOLT AC system (alternating current from a power outlet or an on-
board generator).
12-VOLT SYSTEM
Your motorhome has two 12V coach
batteries; one in the engine compartment
and the other in a compartment on the
drivers side (Image 57.1). The one in the
drivers side compartment is also called the
auxiliary battery.
The engine compartment battery (located
under the hood) is charged by the alternator
while driving the motorhome. It suppplies
power to the engine ignition switch, dash
controls switches and all exterior lighting of
the motorhome.
The auxiliary or coach battery (Image 57.1) operates the furnace, water pump, liquid
propane (LP) gas detector, CO detector, monitor panel and all interior lighting. It also
supplies power to the electronic controls for the water heater and the refrigerator.
The auxiliary or coach battery(ies) are charged in two ways:
• From the vehicle alternator when the engine is running for approximately 30
minutes (this is the most efficient way).
• From the 12-Volt system through the power converter (at a lower charge rate using
the shoreline or generator, can take up to 6-8 hours).
2021 Wayfarer TM Series Owners Manual V1.0
Image 57.1
Coach Battery Located in Drivers Side
Compartment
57