TM 9-2350-247-20-1BLACKOUT MARKER LIGHT(S) AND/OR TAILLIGHT(S) DO NOT OPERATE 0040 00INITIAL SETUP:Maintenance LevelUnitTools and Special ToolsGeneral Mechanic’s Tool Kit (WP 0541 00, Item 57)Multimeter (WP 0541 00, Item 29)Personnel RequiredUnit MechanicReferencesSee your -10Equipment ConditionEngine stopped (see your -10)Carrier blocked (see your -10)NOTEM548A1 and M548A3 troubleshooting procedures are the same. M548A1 procedure is shown.T1. Operate all exterior lights (see your -10).2. Do any exterior lights operate in any light switch positions?YESNOTN1. Go to no exterior lights operate(WP 0034 00).Y1. Turn light switch to BO MARKER.2. Is just one BO marker and/or just one BO taillight out?YESNOGO TO BY (PAGE 0040 00-3)0040 00-1
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