Remove rings, bracelets, watches, necklaces,
and any other jewelry before working around
vehicle. Jewelry can catch on equipment and
cause injury or short across electrical circuits, or
cause severe burns or electrical shock.
Use care when testing electrical connectors not
to bend connector pins or damage connector
sockets with multimeter probes. Failure to
comply may result in damage to equipment.
Inspect connector pins/sockets for damage,
corrosion, and serviceability. Check that
connector pins are not pushed back and
are capable of making good contact.
(1) Disconnect marker light connector from
connector (refer to Table 2-12.4. M1085/
M1086/M1089/M1096 Intermediate, Side,
and Rear Marker Light Connectors and
(2) Set multimeter to volts DC.
(3) Connect positive (+) probe of multimeter
to connector (refer to Table 2-12.4.
Intermediate, Side, and Rear Marker Light
Connectors and Splices).
(4) Connect negative (-) probe of multimeter to
(5) Position main light switch to SER DRIVE
(TM 9-2320-366-10-1) and note reading
(6) Position main light switch to OFF
(7) If 12 VDC is not present, repair wire 489
(refer to Table 2-12.4. M1085/M1086/
M1089/M1096 Intermediate, Side, and
Rear Marker Light Connectors and Splices)
Table 2-12.4. M1085/M1086/M1089/M1096 Intermediate,
(para 2-45) or replace M1086/M1089 rear
Side, and Rear Marker Light Connectors and Splices
lights cable assembly (para 7-104) or
M1085/M1096 rear lights cable assembly