I have a BC 763 G 2400 hrs. on it. has always ran excelent, until today. big storm here and after i got the driveway all cleaned out, i shut it off , about half hr. later i went to start it, lights came on as normal, went to turn it over and everything died, no power anywhere at all, found relay marked "ST. SWITCH " was bad, i replaced it, turned key and all lite up, perfect......until i went to turn it over, then the relay blew again... any idea's ????? there is a starter relay and a switch relay and the sw relay is the guy going.......