TM-9-2350-247-20-1 Unit Maintenance Manual Volume 1 M548A1 M548A3 Tracked Cargo Carrier Download
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TM 9-2350-247-20-1 BLACKOUT STOPLIGHT DOES NOT WORKâContinued 0039 00 2Y 1. Connect circuits 19, 514-515, and 520 to infrared-blackout select switch. 2. Remove blackout stoplight-taillight bulb (1). 3. Measure resistance of bulb (1) for continuity. 4. Does multimeter indicate any continuity? YES NO 2YN 1. Replace blackout stoplight-taillight bulb (WP 0278 00). 2. Verify no faults found. 3Y 1. Disconnect circuit 23 connector (1) from blackout stoplight-taillight. 2. Connect battery negative lead (WP 0292 00). 3. Turn MASTER SWITCH ON. 4. Measure voltage between circuit 23 connector (1) and ground. 5. Does multimeter show voltage on circuit 23 connector (1)? YES NO 3YN 1. Repair wiring harness (WP 0294 00). 2. Verify no faults found. 0039 00-2