Komatsu PC78US-6 Operation & Maintenance Manual page 71

OPERATION
DETAILED CONTROLS AND GAUGES
NOTICE
Be sure to switch the lamp to the OFF position after use.
If the switch is left at the ON position, the battery will run down.
REMARK
NOTICE
This cigarette lighter is of a 24 V type. Hence do not use this as a power
source for electric equipment of 12 V type, otherwise they will likely be
damaged.
The capacity of this cigarette lighter is 85 W (24 V X 3.5 A).
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