What was found
WHILE ENROUTE FROM STL TO ELP, SMOKE STARTED TO EMIT FROM THE CENTER CONSOLE AFTER THE AUTO PILOT WAS ENGAGED. THE FLIGHT CREW NOTICED SMALL FLAMES AND EXTINGUISHED THEM WITH A HALON FIRE BOTTLE. THE FLIGHT CREW PULLED AND COLLERED THE CIRCUIT BREAKERS TO THE AUTO PILOT TRIM AND DECLARED AN EMERGENCY LANDING AT ELP. MAINTENANCE INSPECTED THE AIRCRAFT WHICH REVEALED THE STABALIZER TRIM LIGHT PANEL BURNED AND MELTED. MAINTENANCE REPLACED THE LIGHT PANEL AND PERFORMED SUCESSFUL OPERATIONAL CHECKS IN ACCORDANCE WITH THE DOUGLAS MAINTENANCE MANUAL. THE AIRCRAFT WAS RETURNED TO SERVICE.