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 INFRARED HEADLIGHT(S) DON’T WORK—Continued 0032 00 5Y 1. Install dimmer switch and wiring harness 12349881 plug on dimmer switch. 2. Install wiring harness 12349881 circuit 514/515 plug on IR/BO selector switch jack. 3. Remove harness 12349881 plug (1) from lighting control switch jack (2). 4. Measure resistance between wiring harness 12349881 lighting control switch plug (1) pin D (3) and IR/BO selector circuit 520 plug (4). 5. Does multimeter read 0 ohms? YES NO 5YN 1. Faulty harness 12349881 circuit 520. Beyond unit maintenance repair. 2. Notify supervisor. 6Y 1. Install circuit 520 plug on IR/BO selector switch. 2. Replace lighting control switch (WP 0283 00). 3. Verify no faults found. 0032 00-4