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TM 9-2320-364-20-2
2-1372
25. BLACKOUT STOPLIGHTS DO NOT OPERATE (CONT).
Regular stoplights operate
indicating 10 to 14 vdc present
on wire 1005 to BLACKOUT
LIGHTS selector switch and
wire 1435 is OK.
Wire 1678 faulty.
Rear composite light faulty.
Blackout stoplight lamp faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If 10 to 14 vdc is not present on
power contact of blackout
stoplight socket, blackout
stoplight will not operate.
YES
NO
Go to Step 3 of this
Fault.
2.
Are 10 to 14 vdc measured on
blackout light socket power
contact?
Go to Step 4 of this
Fault.
WARNING
Read WARNING
on Page 2-1373
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