WHILE DRIVING ON THE INTERSTATE, CONSUMER SMELLED AN ELECTRICAL SHORT SMELL. SMOKE STARTED COMING FROM THE SLEEPER BIRTH AREA, THEN THE CABIN WAS IN FLAMES. THE FIRE INSPECTOR INDICATED THAT THE FIRE WAS CAUSED BY AN ELECTRICAL SHORT IN THE SWITCH THAT CONTROLLED THE BUILT IN REFRIGERATOR FREEZER. *NLM WHILE DRIVING SOUTHBOUND ON 195 1998 VOLVO VN770 HAD SMOKE COMING FROM THE FRONT CAB. FIRE WAS A RESULT OF AN ELECTRICAL SHORT IN THE SWITCH THAT CONTROLLED THE BUILT IN REFRIGERATOR FREEZER. TRUCK WAS DECLARED A TOTAL LOSS.*MR