What was found
(AUS) TRANSFER PUMP CONNECTORS INCORRECTLY WIRED. THE PUMPS HAD WIRINGSWAPPED AT PIN 2 AND PIN 3. THE WIRES WERE RECONNECTED IN THE BELIEF THAT THE WIRING CONFIGURATION WAS INCORRECT. THE AIRCRAFTHAD BEEN SUPPLIED WITH THE WIRING IN A NON-STANDARD FORMAT. INVESTIGATION FOUND THAT SOME AIRCRAFT HAD BEEN WIRED DIFFERENTLY AT MANUFACTURE. THIS WIRING CHANGE WAS NOT INCORPORATED IN THESERVICE BULLETIN.