1. Remove rear main harness circuit 21 plug (1) from
front main harness circuit 21 jack (2) on
instrument panel.
2. Measure voltage between front main harness
jack (2) and ground.
3. Does multimeter read less than 17 volts?
1. Turn MASTER SWITCH to OFF.
2. Remove instrument panel for access. See task:
remove instrument panel mounts and ground lead
(page 11-2).
.
3. Remove front main harness plug (1) from lighting
control switch jack (2).
.
4. Measure resistance between lighting control switch
jack (2) pin H (3) and circuit 21 jack (4).
1. Does multimeter read O ohms?
1. Repair rear main harness
circuit 21 (page 14-3).
2. Verify no faults found.
1. Install rear main harness circuit 21 plug on left
tail light jack.
2. Replace main light switch (page 11-9).
3. Verify no faults found.
1. Install rear main harness
circuit 21 plug on left tail
light jack.
2. Repair front main harness
circuit 21 (page 14-3).
3. Verify no faults found.
3-99
TM 9-2350-261-20-1