TM 9-2320-260-20
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Wires with circuit numbers are shown here for reference only and are NOT to be used for troubleshooting
procedures.
The electrical systems include those components that either provide or are powered by electricity. Each of
these components will be described as part of the following subsystems:
a. Battery System Operation (page 1-56).
b. Starting System Operation (page 1-57).
c. Generating System Operation (page 1-58).
d. Heating System Operation (page 1-58).
e. Gage and Warning System Operation (page 1-59).
f. Directional Signal System Operation (page 1-60).
g. Lighting System Operation (page 1-61).
a. Battery System Operation.
A SLAVE RECEPTACLE - Used when vehicle batteries are not sufficiently charged. Provides an
external power source to assist in cranking engine.
B BATTERY SWITCH - Connects or disconnects the batteries from the vehicle electrical system.
C PROTECTIVE CONTROL BOX - Prevents starter motor from engaging when engine is
running.
D BATTERIES Four 6TN batteries provide 24-volt power to energize starter motor and electrical
accessories.
1-56
