What was found
RT MAIN GEAR GREEN DOWN LIGHT ON FORWARD PANEL REMAINED ON AFTER T/O WITH GEAR HANDLE IN THE UP POSITION. THE ANTI-SKID OFF LIGHT ON THE MASTER WARNING PANEL WAS ALSO ILLUMINATED. AFTER A SHORT TIME THE LIGHTS FLICKERED AND THEN REMAINED OFF. NR 2 SYSTEM WAS SELECTED AND ALL LIGHTS WERE OUT ON S/O'S PANEL. VERIFIED CONNECTOR CLEAN AT 66GB PROXIMITY DETECTOR. LANDING GEAR WARNING SYSTEM OPS CHECKED GOOD PER M/M 32-61-00. VERIFIED WIRING FROM 54GB PROXIMITY BOX TO 66GB SYSTEM 1 SENSOR & ASSOCIATED GROUND WIRE PER WDG 32-61-11 & -14. WIRING CHECKED GOOD. REMOVED AND REPLACED PROXIMITY DETECTOR MODULE UNIT PER M/M 32-61-12 & OPS CHECKED GOOD.