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 WORK—Continued 0039 00 6Y 1. Connect circuit 23 (right) or circuit 22 (left) connectors to service stoplight-taillight. 2. Remove bulb (1) from blackout marker (WP 0280 00). 3. Measure for continuity. 4. Does multimeter indicate any continuity? YES NO 6YN 1. Replace faulty blackout marker bulb (WP 0280 00). 2. Verify no faults found. 7Y 1. Install bulb in blackout marker (WP 0280 00). 2. Disconnect circuit 75 lead (1) and circuit 75A lead (2) from stop light switch (3). 3. Measure resistance between circuits 75 and 75A. Multimeter should read infinity. 4. Press switch arm and measure resistance. Multimeter should show continuity. 5. Are readings correct? YES NO 7YN 1. Replace faulty stoplight switch (WP 0274 00). 2. Verify no faults found. 0039 00-4