What was found
DURING APPROACH, NOSE LANDING GEAR GREEN LIGHT FAILED TO ILLUMINATE AFTER GEAR EXTENSION. PERFORMED COCKPIT OPERATING MANUAL PROCEDURES AND INDICATONS REMAINED THE SAME. EMERGENCY EQUIPMENT WAS CALLED OUT ON STANDBY AS A PRECAUTION. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND CANNON PLUG LOOSE AT NOSE GEAR UPLIMIT SWITCH. ALSO, FOUND SWITCH BAD. TIGHTENED CANNON PLUG AND REPLACED SWITCH, OPERATIONAL CHECK NORMAL.