TM 9-2320-366-10-1
2-1. INSTRUMENT PANEL CONTROLS AND INDICATORS (CONT)
c. Main Light Switch. Figure 2-3 shows all controls on the main light switch.
Figure 2-3. Main Light Switch
1. Main Selector Lever. Controls operation of service and blackout lights.
a. All blackout lights operate when main selector lever is positioned to BO DRIVE.
b. Blackout marker lights operate when main selector lever is positioned to BO
MARKER.
c. Stoplights operate when main selector lever is positioned to STOP LIGHT and
brake pedal is pressed.
d. All service drive lights operate when main selector lever is positioned to SER
DRIVE.
e. No exterior lights operate when main selector lever is positioned to OFF.
2. UNLOCK Lever. Locks main light switch. UNLOCK lever must be lifted and held
in order to place main selector lever in any position except BO MARKER.
3. Auxiliary Lever. Controls operation of parking lights.
a. Operates parking lights when auxiliary lever is positioned to PARK and main
selector lever is positioned to SER DRIVE.
b. PANEL BRT position allows adjustment of instrument panel illumination by using
the dimmer switch.
c. DIM position sets instrument panel illumination to its lowest setting and does not
allow use of the dimmer switch.
2-10
