AFTER TOWING MY TRAILER SEVERAL BLOCKS I PULLED OVER AT MY DESTINATION AND REALIZED MY TRAILER LIGHTS HAD GONE OUT. THIS IS UNUSUAL BECAUSE THE TRAILER JUST MADE A 2500 MILE TRIP WITH NO PROBLEMS. AFTER CHECKING THE CONNECTIONS AND OPENING UP THE FUSE BOX TO LOOK FOR BLOWN FUSES I WENT BACK TO CHECK THE LIGHTS AGAIN. UPON RETURNING TO THE TRUCK SEVERAL MINUTES LATER I FOUND THE FUSE BOX AND A PORTION OF THE DASHBOARD IN FLAMES. I SMOTHERED THE FIRE AND FOUND ALL THE ELECTRONICS TO WORK WITH THE EXCEPTION OF THE PASSENGER POWER SEAT AND THE TRAILER LIGHTS AND BRAKES. THE VEHICLE IS A 2003 FORD SUPERDUTY LARIAT F-250 5.4L *LA