CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONS
TM 9-2350-256-20
2-19
ELECTRICAL TROUBLESHOOTING-Continued
WINCH 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.
H
Reconnect electrical accessories panel wiring harness
to electrical accessories panel. Remove three screws
(4), three lockwashers (5), ground wire (6), and flat
washer (7) and release main switch panel (8) from
mounting bracket. Disconnect wire 10-419 from Y-
connector of switch panel, radio, and bilge pump to
bulkhead wiring harness at main switch panel. Turn
MASTER switch on and check for voltage. If voltage
is present, repair wire 419 from Y-connector at main
switch panel to APU control box bulkhead wiring
harness. If voltage is not present, go to step I.
I
Reconnect wire 10-419 to Y-connector of switch
panel, radio, and bilge pump to bulkhead wiring
harness to main switch panel. Install main switch
panel (8), flat washer (7), ground wire (6), three
lockwashers (5), and three screws (4) to mounting
bracket. Open air inlet doors (TM 9-2350-256-10).
Disconnect wire 48 pin A from bulkhead to master
relay wiring harness. Place red multimeter lead in
socket and black lead to ground. Turn MASTER
switch on and check for voltage. If voltage is present,
repair/replace switch panel, radio, and bilge pump to
bulkhead wiring harness (see paragraph 6-53). If
voltage is not present, troubleshoot master relay
circuit (see paragraph 2-19, master relay fails to
operate).
2-266