(1) Position master power switch to on
(TM 9-2320-365-10).
(2) Position main light switch to BO DRIVE
(TM 9-2320-365-10).
(3) Apply brakes and observe blackout
stoplights.
(4) If both blackout stoplights do not
illuminate, go to step 5 of this fault.
(5) Position main light switch to OFF
(TM 9-2320-365-10).
(6) Position master power switch to
off (TM 9-2320-365-10).
Change 1 2-729
TM 9-2320-365-20-1
