What was found
(CAN) ON APPROACH , RED NOSE GEAR INDICATION, RECYCLED GEAR STILL NOT DOWN. GO AROUND RECYCLED GEAR TILL GEAR DOWN INDICATION. FOUND CONNECTOR LOOSE AT 19 GA LANDING GEAR CONTROL INTERFACE UNIT NR 1. RELACED CONNECTOR, BITE TEST OF LANDING GEAR CONTROL INTERFACE UNITS, AND ALL GEAR INDICATION GREEN.