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 HIGH BEAM INDICATOR LIGHT DOESN’T WORK—Continued 0050 00 2Y 1. Check continuity between light assembly (1) bulb base contact and ground. 2. Is there continuity? YES NO 2YN 1. Replace headlight high beam indicator bulb (WP 0287 00). 2. Verify no faults found. 3Y 1. Remove two screws (1), washers (2), and dimmer switch (3). 2. Remove harness 12349881 plug (4) from dimmer switch jack (5). 3. Measure resistance between dimmer switch jack (5) pins D (6) and B (7) and between pins F (8) and H (9). 4. Did multimeter read 0 ohms for both measurements? YES NO 3YN 1. Replace dimmer switch (WP 0333 00). 2. Verify no faults found. 0050 00-2