THE INSULATION ON THE WIRING HARNESS IN MY 1995 C220 HAS DETERIORATED SO MUCH THAT IT SPARKED FIRE ON SECTIONS OF THE HARNESS. I HAVE JUST LEARNED THAT MB USA IS NOT OWNING UP TO THIS SERIOUS PROBLEM. WHY IS THE COMPANY NOT PROVIDING SOME MEANS TO HAVE OWNERS REPLACE IT UNDER A SHARED COST PROGRAM? *TR