WHILE DRIVING MY CHECK ENGINE LIGHT CAME ON. AFTER CHECKING ENGINE FLUIDS AND VERIFYING EVERYTHING WAS OKAY. THE ENGINE STARTED LOSING POWER. WE CALLED THE LOCAL DEALER AND THEY WEREN'T ABLE TO GET IT IN TO CHECK, SO WE TRAILERED IT TO A NEENAH REPAIR SHOP. AFTER CHECKING VARIOUS THINGS HE INDICATED THERE WAS A FIRE IN THE WIRING HARNESS OF THIS VEHICLE. I HAVE RETAINED THE PARTS WHICH THE FORD DEALER WANTED TO HAVE. THIS WAS MY THIRD FORD VEHICLE WHICH STARTED ON FIRE. I'VE HAD AN LTD THAT WAS TOTALED WHILE PARKED IN MY DRIVEWAY. A FORD CONVERSION VAN WHICH THE AUXILIARY POWER STARTED THE INTERIOR ON FIRE WHILE I WAS DRIVING IT AND THIS FORD EXCURSION. I ALSO HAVE A 2002 F350 WHICH HAS HAD EVERY PROBLEM THAT MY EXCURSION HAS HAD. BOTH THESE VEHICLES HAVE THE SAME MOTOR. BOTH VEHICLES ARE ON THE THIRD ALTERNATOR. THERE IS A PROBLEM IN THE ELECTRICAL SYSTEM OF THESE FORD VEHICLES. THE REPAIR COSTS FOR THE EXCURSION HAVE EXCEEDED $2500.00. *AK