TM 9-2320-303-10
2-2.
INSTRUMENT PANEL (Con't).
Key
Control or Indicator
Function
14
Main Light Switch
Five-position switch. To engage, mechanical switch must
be held in UNLOCK position (up). Switch positions are:
(a) BO DRIVE. Same as BO MARKER position, but
blackout drive light and trailer circuit will also
function.
(b) BO MARKER. Blackout marker/tail lights and
blackout stop lights will function. No other lights or
electrical horn will function.
(c) OFF. No lights or electrical horn will function.
(d) STOP LIGHT. Electrical horn and all separately
controlled lights will function except blackout stop
lights. No marker/tail lights or drive/headlights will
function.
(e) SER DRIVE. Same as STOP LIGHT position, but
headlight and “non-blackout” marker/tail lights will
function.
2-6
