TM 9-2350-261-20-1 1. Install circuit 520 plug on IR/BO selector switch.2. Replace lighting control switch (page 11-9).3. Verify no faults found.1. Remove circuit 514 (high beam) plug (1) or515 (low beam) plug (2) from failing IR serviceheadlight (3).2. Measure voltage between front main harness circuit514 plug (1) or 515 plug (2) and ground.3. Does multimeter read less than 17 volts?NO1. Replace IR serviceheadlight lamp unit(page 12-3).2. Verify no faults found.1. Is failing IR headlight located on right side of1. Repair front main harnesscarrier?circuit 514 or 515 betweenleft IR head light andY E Sdimmer switch(page 14-3).2. Verify no faults found.3-86
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