CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONS
TM 9-2350-256-20
2-19 ELECTRICAL TROUBLESHOOTING-Continued
RIGGER'S LIGHTS AND FRONT SIGNAL LIGHT-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.
F
Reconnect wire 16 from rigger's SERVICE light switch.
Remove three screws (4), three lockwashers (5),
ground lead (6), and flat washer (7) and release main
switch panel (8) from mounting brackets. Disconnect
switch panel to gage panel and miscellaneous switches
wiring harness from main switch panel. Place a jumper
wire from pin N to socket N. Place red lead of
multimeter in socket D of wire 75/16 and black lead to
ground. Turn MASTER switch on, main lighting switch
to STOP LIGHT, and check for voltage. Turn MASTER
and main lighting switches OFF. If voltage is present,
repair/replace wire 16/75 of switch panel to gage panel
and
miscellaneous
switches
wiring
harness
(see
paragraph 6-55 for dual voltage; 6-56 for single voltage.
If voltage is not present, go to step G.
G
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, reconnect switch panel to gage panel and
miscellaneous switches wiring harness to main switch
panel and go to step S.
2-322
