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![]() TM 9-2330-385-14
4. TAILLIGHT DOES NOT OPERATE (CONT).
3.
KNOWN INFO
WARNING
TEST OPTIONS
Read WARNING
Truck electrical system OK.
on Page 4-57
Continuity test.
All other lights on trailer
operate.
Taillight lamp OK.
REASON FOR QUESTION
Is continuity measured
Rear junction box OK.
Wire 1008/21-29 OK.
If taillight ground is faulty, light
between taillight socket
will not operate.
ground and a known good
ground?
POSSIBLE PROBLEMS
Taillight faulty.
Replace rear
composite light
NO
Verify repair, go to
Step 6 of this Fault.
YES
Fault not corrected.
Notify
DS Maintenance.
4-56.4
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