What was found
(CAN) ON DESCENT INTO FORT SMITH FROM FORT CHIPEWYAN, THE CREW NOTICED AN ELECTRICAL SMELL, FOLLOWED SHORTLY BY SMOKE.ALL ELECTRICAL POWER WAS TURNED OFF.ALL NON ESSENTIAL FUNCTIONS WERE TURNED OFF THEN POWER WAS TURNED BACK ON. THE SMELL REAPPEARED.POWER WAS RESTORED LONG ENOUGH TO LOWER GEAR AND MAKE RADIO CALLS THEN TURNED OFF FOR LANDING. ON INSPECTION, THE WIRE ATTACHED TO THE POWER SIDE OF THE WING DEICE LIGHT CIRCUIT BREAKER WAS LOOSE.THE BAD CONNECTION WAS CAUSING THE WIRE TO HEAT UP NEAR THE TERMINAL.