TM-9-2320-428-10
TRUCK, CARGO, 8X8, M977
TECHNICAL MANUAL; OPERATOR'S MANUAL
JUNE 2009
TM-9-2320-428-10 - Page 387 of 1072
OPERATOR MAINTENANCE
OPERATE BLACKOUT DRIVE LIGHT
INITIAL SETUP:
Not Applicable
TURN BLACKOUT DRIVE LIGHT ON/OFF
CAUTION
Failure to place light switches in the OFF position when vehicle is not in
use may cause battery and/or vehicle damage.
NOTE
•
Use blackout drive light for night driving under blackout conditions.
•
Cabin dome light/switch, vehicle mounted work lights/switch (M983,
M984A1, M1977), rear beacon lights/switch (M984A only), electric
horn (on steering column), and reverse alarm are disabled when
lighting control lever is positioned to either blackout lighting position.
1.
Lift up and hold UNLOCK lever (1).
Figure 1.
2.
Set lighting control lever (2) to B.O. DRIVE position.
3.
Release UNLOCK lever (1); blackout drive light (3) and blackout markers (4) will
illuminate.
4.
Blackout stoplights (5) will illuminate when service brake pedal is applied.
TM 9-2320-428-10
0072
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