Komatsu PC15MRX-1 Operation And Maintenance Manual page 64

OPERATION
EXPLANATION OF COMPONENTS
HORN SWITCH
When the button(2) at the tip of the right work equipment con-
trol lever is pressed, the horn will sound.
LAMP SWITCH
This switch (3) lights up the head lamps and the panel lamp.
ON position : Panel lamp and head lamp lights up.
OFF position : Lamps goes off.
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