What was found
DURING CRUISE FLIGHT, ALL ANTI-ICE CIRCUIT BREAKERS TRIPPED. CREW SMELLED SMOKE. PROCEDED TO MAKE A NORMAL LANDING. OPENED THE FORWARD NOSE PANELS AND FOUND CONNECTOR E462, JUST FORWARD OF PRESSURE BULKHEAD, COMPLETELY BURNED AND MELTED ON BOTH HALVES AND 3 INCHES OF WIRING ON EITHER END BURNED. WIRING HARNESS WAS LAYING ON THE PRESSURIZATION CROSSOVER DUCT, WHICH HAS AN ALUMINUM COVERING, UNSECURED. ALSO FOUND AT CONNECTOR E106, 16 GAUGE WIRE (SD5F) GOING TO TIMER INSTEAD OF POWER CONTROL RELAY. 14 GAUGE WIRE (SD7C) WAS GOING TO THE POWER CONTROL RELAY INSTEAD OF TIMER.