TM-9-2320-386-10
2-1/2-TON, 6X6, M44A3 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; EXTENDED SERVICE PROGRAM (ESP); OPERATOR’S MANUAL
JANUARY 1996
TM-9-2320-386-10 - Page 101 of 223
TM 9-2320-386-10
2-24. OPERATION OF VEHICLE SERVICE LIGHTS
Select and set light switch for lighting required. See following chart for switch
positions.
.
WARNING
.
When hazard warning lights/emergency flashers are in use, they override
brake lights/stop lamp operation. Therefore, when driving with hazard warn-
ing lights/emergency flashers operating, be prepared to use hand signals to
indicate a stop. Failure to do so may result in injury to personnel.
CAUTION
To move main switch lever from OFF to any ON position except B.O. marker,
unlock switch must be lifted to UNLOCK position. Failure to do this may
result in damage to light switch.
NOTE
• For turn signals, move main switch to either service drive or stoplight
position. Move turn signal control lever up for right turn and down for left
turn. Move to neutral to deactivate turn signals.
• During blackout operation, the back lighting of the LCD display on the (CTIS)
ECV can be turned off by momentarily pressing the off button, for no longer
than two seconds. To switch backlighting ON, the CTIS system must be
turned off by pressing and holding the off button for more than two seconds,
then pressing the on button which will reactivate the CTIS system.
CAUTION
TO MOVE MAIN SWITCH
LEVER FROM OFF TO
ANY ON POSITION
EXCEPT B.O. MARKER,
UNLOCK SWITCH MUST
BE LIFTED TO UNLOCK
POSITION. FAILURE TO
DO THIS MAY RESULT IN
DAMAGE TO LIGHT
SWITCH.
NOTE
FOR TURN SIGNALS,
MOVE MAIN SWITCH TO
EITHER SERVICE DRIVE
OR STOPLIGHT POSI-
TION. MOVE TURN SIG-
NAL CONTROL LEVER UP
FOR RIGHT TURN AND
DOWN FOR LEFT TURN.
MOVE TO NEUTRAL TO
DEACTIVATE TURN SIG-
NALS.
MAIN
SWITCH
B.O.
MARKER
STOP
LIGHT
DIM
AUXILIARY
SWITCH
UNLOCK
SWITCH
FOR SERVICE PARK, MOVE MAIN
SWITCH TO SERVICE DRIVE. MOVE
AUXILIARY SWITCH TO PARK.
FRONT
RIGHT
RIGHT
LEFT
LEFT
BLACKOUT MARKER
BLACKOUT DRIVE
FRONT
REAR
REAR
LEFT
RIGHT
LEFT
INCLUDES B.O.
STOP-LIGHT
AUXILIARY SWITCH OPER-
ATES INSTRUMENT PANEL
LIGHTS WHEN MAIN SWITCH
IS IN ANY ON POSITION.
FRONT
RIGHT
LEFT
RIGHT
LEFT
STOPLIGHT (BRAKE LIGHT)
REAR
FRONT
LEFT
RIGHT
SERVICE DRIVE
REAR
LEFT
RIGHT
FRONT
LEFT
RIGHT
SERVICE DRIVE
REAR
LEFT
RIGHT
2-68
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