JLG 18RS Operator Manual - Manual (Page 43)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3121283 – JLG Lift – 3-13
7. Drive Orientation Indicator
When the boom is swung beyond the rear
drive tires or further in either direction, the
Drive Orientation indicator will illuminate
when the drive function is selected. This is a signal for
the operator to verify that the drive control is being oper-
ated in the proper direction (i.e. controls reversed situa-
tions).