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
