CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONS
TM 9-2350-256-20
2-19 ELECTRICAL TROUBLESHOOTING-Continued
SERVICE HEADLIGHTS-Continued
WARNING
Remove all jewelry such as rings, dog tags,
bracelets, etc. If jewelry contacts a metal
surface a direct short may result in instant
heating of tools, damage to equipment, and
injury or death to personnel.
E
Reconnect headlight base assembly to headlight
assembly. Disconnect headlight and dimmer
switch wiring harness from dimmer switch. Place
a jumper wire from socket C to pin C. Place red
lead of multimeter on pin E of wire 18 and black
lead to ground. Turn MASTER switch on,
UNLOCK and place main lighting switch in SER.
DRIVE position, and auxiliary switch in any
position other than PARK, and check for voltage.
Turn MASTER and main lighting switches OFF. If
voltage is present, go to step H. If voltage is not
present, replace dimmer switch (see paragraph 6-
25).
F
Reconnect headlight and dimmer switch wiring
harness to dimmer switch. Remove three screws
(6), three lockwashers (7), ground wire (8), and
flat washer (9) and release main switch panel (10)
from mounting bracket. Disconnect switch panel
to gage panel and miscellaneous switches wiring
harness from main switch panel. Place red lead
of multimeter on pin N of wire 10 and black lead to
ground. Turn MASTER switch on and check for
voltage. Turn MASTER switch OFF. If voltage is
present, go to step H. If voltage is not present, go
to step G.
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