What was found
PILOT REPORTS ON TAKE OFF, GEAR WOULD NOT RETRACT UNLESS OVER-RIDDEN, ALSO BOTH FLIGHT - IDLE UNLOCK LIGHT CAME ON AND WOULD GO OUT 3-6 MINS INTO FLIGHT.INSPECTED ALL GEAR PROX SENSORS AND CANNON-PLUG CONNECTIONS, FOUND LT MAIN LANDING GEAR WOW PROX SENSOR CONNECTOR BEHIND GEAR IN NACELLE, FULL OF WATER. CLEANED CANNON PLUG AND PERFORMED MULTIPLE GEAR SWINGS. ALL OPS CHECK GOOD AT THIS TIME. NO DEFECTS NOTED.