You can't really blame it on Ford that you went and put in all this high watt stereo equipement in without upgrading the charging system, and expecting it to all work fine forever. You must remember that when you are overtaxing the charging system with the hi-watt stereo blaring loud, then you must turn some of the other accesories off during that time so your alternator isn't full fielding for long periods. Because doing that will burn out the diodes in ANY alternator. If you want to be able to turn all your accesories on high full bore along with your stereo cranked, then you need to put in like a 150-200 amp alternator so your charging system wont be running at 100% all the time. If it wasn't you doing that, then it was probably the previous owner who did. My '95 Contour has 110,000 miles on it, all systems still pulling strong.
