TM 9-2350-247-20-1NO EXTERIOR LIGHTS OPERATE 0034 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)Instrument panel partially removed (WP 0256 00)NOTEM548A1 and M548A3 troubleshooting procedures are the same. M548A1 procedure i s shown.T1. Remove main wiring harness plug (1) from light switch jack (2).2. Remove main wiring harness circuit 15 plug (3) from power/instrument panel wiring harness circuit 15 jack (4).3. Measure resistance between main wiring harness circuit 15 plug(3) and plug (1) pin F (5).4. Does multimeter read 0 ohms?YESNOTN1. Repair main wiring harness circuit15 (WP 0294 00).2. Verify no faults found.0034 00-1
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