TM 9-2320-360-10
2-2. DESCRIPTION AND USE OF CONTROLS AND INDICATORS (CONT)
STEERING-COLUMN-MOUNTED CONTROLS
1
Headlight Dimmer Switch
Pushbutton switch used to raise or lower headlight beams. High beam indicator lights (blue) when
high beams are engaged.
2
Steering Wheel
Used to control direction of HET Tractor travel.
3
Trailer Handbrake Control
Used to apply and release trailer service brakes without engaging HET Tractor service brakes. Not
used during normal operation. Can be used for coupling and uncoupling trailers without spring
brake.
4
Emergency Flasher Control
Two-position, push/pull switch Used to control emergency flashers. BLACK OUT LIGHTS switch
must be in off position before emergency flashers will operate. Push in switch to activate
emergency flashers. Left and right turn indicators flash (green) when emergency flashers are
engaged.
5
Horn Button
Sounds city horn when pressed. Horn is for use in populated areas.
6
Turn Signal Lever
Used to operate turn signals. Push lever up to signal right turn. Pull lever down to signal left turn.
Automatically returns to off position when steering wheels is returned to straight position. Left or
right turn indicator flashes when turn signal is engaged.
7
Steering Column Lock Pin
Prevents steering wheel from turning when installed in steering column.
2-12 Change 1