CORRECTIVE ACTION Continued
Reconnect wire 38/518 to winch light switch side of 15 A circuit breaker. Disconnect wire 38/518 from
panel connector side of 15 A circuit breaker. Place red lead of multimeter in wire 38/518 and black lead
to ground. Turn MASTER switch on, and check for voltage. Turn MASTER switch OFF. If voltage is
present, replace 15 A circuit breaker (see WP 0158 00). If voltage is not present, repair/replace wire
38/518 from pin A to 15 A circuit breaker (see WP 0158 00).
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 7.