ELECTRICAL: DRIVING APPROXIMATELY 10MPH AND SMELLED WIRES BURNING, STOPPED VEHICLE AND GOT OUT AND THE SMELL GOT STRONGER. GOT BACK INTO VEHICLE AND DROVE ANOTHER 25 FEET, AND NOTICED THE SMOKE COMING FROM UNDERNEATH THE HOOD. PULLED OVER AND CALLED FIRE DEPT . VEHICLE TOTALED. CAUSE OF FIRE LOOSE NUT ON POWER SOURCE BOX. *AK