TM-9-2320-280-10 HMMWV Operator Manual Download
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TM 9-2320-280-10 c. Blackout Light Operation . Place interior light switch (1) in "B/O" position. Blackout lights will illuminate. NOTE Blackout position on the electrical control panel overrides the automatic blackout switches in the event of automatic blackout switch failure in blackout conditions. d. Interior Light Operation . Place interior light switch (1) in "OFF" position to extinguish all interior lights. e. Fuse Replacement. To replace a defective fuse (2) in the electrical control panel (3), pull fuse (2) straight out of panel (3). Inspect fuse (2) for an open fuse element (5). Replace with known good fuse (4). All fuses in the control box are 20 amp. 2-199