CONSUMER REPORTED TO THE FIRE INVESTIGATOR, TOM SCHAEFER, THAT WHEN TRYING TO START VEHICLE AFTER SITTING ALL NIGHT HEARD A LOUD THUMP, AND THEN ALL OF THE LIGHTS ON THE DASH WENT OUT. SMOKE COMING FROM UNDER THE HOOD. A FIRE STARTED IN THE ENGINE COMPARTMENT. MR. SCHAEFER SAID THAT THE CONSUMER USED THE WORD THUMP NOT BANG TO DESCRIBE THE INITIAL INCIDENT. *AK