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 SERVICE AND/OR BLACKOUT STOP LIGHTS MALFUNCTION—Continued 0033 00 B3Y 1. Remove instrument panel for access (WP 0295 00). 2. Remove harness 12349881 plug (1) from lighting control switch (2). 3. Measure resistance between lighting control switch plug (1) pin C (3) to circuit 22 (service stop) jack (4) or pin N (5) to circuit 23 (BO stop) jack (6). 4. Does multimeter read 0 ohm? YES NO B3YN 1. Install harness 12268797 on tail light. 2. Faulty harness 12349881 circuit 22 or 23. Beyond unit maintenance repair. 3. Notify supervisor. B4Y 1. Install harness 12268797 plugs on harness 12349881 jack and tail light. 2. Replace main light switch (WP 0283 00). 3. Verify no faults found. 0033 00-4