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TM 9-2320-364-20-2
2-1370
25. BLACKOUT STOPLIGHTS DO NOT OPERATE.
INITIAL SETUP
1.
Go to Step 5 of this
Fault.
START
YES
NO
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.
BLACKOUT LIGHTS selector
switch faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Visual inspection.
If both blackout stoplights do not
operate, fault is common
to both.
2-20. ELECTRICAL SYSTEM TROUBLESHOOTING (CONT).
Tools and Special Tools
Tool Kit, General Mechanic’s: Automotive
(Item 74, Appendix G)
STE/ICE-R (optional) (Item 3, Appendix G)
Multimeter (Item 44, Appendix G)
Personnel Required
Two
Equipment Condition
Engine OFF, (TM 9-2320-364-10)
Parking brake applied, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
References
TM 9-2320-364-10
TM 9-4910-571-12&P
Materials/Parts
Preformed Packing (Item 223, Appendix F)
Does at least one blackout
stoplight operate?
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