CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONS
TM 9-2350-256-20
2-19
ELECTRICAL TROUBLESHOOTING-Continued
DRIVER'S PERISCOPE-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.
G
Reconnect wire 999 to B.O. RECEIVER switch.
Disconnect wire 516 from main switch panel side of
B.O. RECEIVER switch. Place red lead of
multimeter in wire 516 and black lead to ground. Turn
MASTER switch on and check for voltage. Turn
MASTER switch OFF. If voltage is present, replace
B.O. RECEIVER switch (see paragraph 6-15). If
voltage is not present, troubleshoot dome light circuit.
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