2012 PETERBILT TRACTOR. CONSUMER WRITES IN REGARDS TO POTENTIAL FIRE DEFECT. *SMD THE CONSUMER STATED HE RECENTLY INVESTIGATED THE CAUSE OF A FIRE IN THE TRACTOR AND DETERMINED THE CAUSE TO BE RELATED TO A POTENTIAL DEFECT IN THE MANNER IN WHICH THE BATTERY CABLES WERE SUPPORTED. THE BATTERY CABLES PASSED FROM THE BATTERY BOX ON THE DRIVER SIDE OF THE TRACTOR, AT A POSITION BEHIND THE CAB, TO THE ENGINE COMPARTMENT. AT THE LOCATION WHERE THE BATTERY CABLES PASSED THE ELECTRONIC CLUTCH ACTUATOR, THEY WERE HELD IN PLACE BY A PLASTIC TIE. DUE TO DRIVE TRAIN VIBRATION AND MOVEMENT, THE PLASTIC TIE USED TO SECURE THE BATTERY CABLES TO THE CLUTCH ACTUATOR SHIELD WERE PRONE TO FAILURE. THE PLASTIC TIE BROKE AT SOME TIME DURING ITS SERVICE LIFE AND THE WEIGHT OF THE BATTERY CABLES CAUSED THEM TO MIGRATE TOWARD THE BOTTOM OF THE CLUTCH ACTUATOR SHIELD. MOVEMENT BETWEEN THE UNSECURED CABLES AND THE SHIELD, WHICH OCCURRED OVER TIME, ABRADED THE INSULATION OF ONE OF THE POSITIVE CABLES. ONCE THE ELECTRICAL INSULATION FAILED, THE CABLE ARCED AGAINST THE SHIELD, ENERGIZING THE ENGINE AND TRANSMISSION. UPDATED 7/1/13 ...UPDATED 10-24-13 *BF