What was found
PILOT EXPERIENCED SMOKE IN COCKPIT DURING APPROACH INTO KBKV AIRPORT, DECLARED AN EMERGENCY AND LANDED SAFELY. SOURCE OF SMOKE WAS COMING FROM OVERHEAD PANEL ABOVE CAPTAIN'S SEAT. NO CAUSE OR CORRECTIVE ACTION AT THIS TIME, MECHANIC DISPATCHED TO LOCATION FOR EVALUATION AND REPAIR. MAINTENANCE FOUND OVERHEAD PANEL LIGHTING TERMINAL POST SHORTED TO GROUND. CLEANED, REPOSITIONED AND INSULATED TERMINAL POST. OVERHEAD PANEL LIGHTING CHECKS SATISFACTORY, NO OTHER DEFECTS NOTED.