HELP fusable link dies while driving

Well, keep an eye on that fuseholder and the 10 ga wiring. The blades are probably not really going to hold up very well with the level of charging current from alt to battery. And BTW, an 80 Amp fuse will not protect a 10 guage wire; 40-50A of charging current to the batt and to the car electric load is going to warm up that wire a good bit. Make sure that there are no sharp kinks in that wire, or the heat will concentrate at that kink.