TM-9-2350-277-20-1 Unit Maintenance Manual Volume 1 M113A3 M577A3 M1064A3 M1068A3 M58 Download
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TM 9-2350-277-20-1 BLACKOUT MARKER LIGHT(S) DON’T WORK—Continued 0034 00 2Y 1. Locate failing light (s). 2. Remove circuit 20 (BO marker) (1) and/or circuit 24 (BO taillight) (2) from failing light. 3. Measure voltage between plug pin and ground. 4. Does multimeter read less than 17 volts? YES NO 2YN 1. Replace faulty light bulb: BO marker (WP 0308 00), left BO taillight (WP 0300 00), and right BO taillight (WP 0302 00). 2. Verify no faults found. 3Y 1. Is one front BO marker light not working? YES NO 3YN 1. Repair harness 12268797 circuit 24 (WP 0382 00). 2. Verify no faults found. 4Y 1. Is right BO marker light out? YES NO 4YN 1. Repair harness 12349881 circuit 20 (WP 0382 00). 2. Verify no faults found. 0034 00-2