What was found
NO GREEN LIGHT NOSE GEAR INDICATION ON FINAL APPROACH, ACCOMPLISHED ROTARY TEST, NO LIGHTS, ACCOMPLISHED EMERGENCY GEAR PROCEDURES AND EMPTIED BLOW DOWN BOTTLE, PULLED D-RING. SUCCESSFUL LANDING. 10 MINS AFTER LANDING LIGHTS CAME ON. APPLIED PR TO ACFT & NOTED NLG GREEN LIGHT INDICATOR TO BE ON. LIGHT REMAINED ON FOR APPROX 1 MIN THEN BEGAN TO FLICKER ON & OFF. INSPECTED INDICATOR LIGHT ASSY, NO DISCREPANCIES NOTED. INSPECTED NLG DOWN LOCK SWITCH & WIRING MOVED AROUND & NOTED INDICATOR LIGHT STOPPED FLICKERING & REMAINED ON. CYCLED MLG SEVERAL TIMES, NOSE DOWN LOCK LIGHT WOULD NOT ILLUMINATE. REMOVED THE CONNECTOR FROM NLG DOWN LOCK SWITCH INSPECTED, CONNECTOR DIRTY, CLEANED CONNECTOR. RECONNECT CONNECTOR. APPLIED PWR & NOTED NOSE GEAR DOWN LOCK LIGHT ILLUMINATED CYCLED MLG 15 TIMES TO OPS CHECK NLG DOWN LOCK LIGHTS ALL 15 OPS CHECKS GOOD IAW MM 32-30-06, 12-10-15, 12-10-36,