Ecm B fuse blowing

[S.O.B.B.]

On my drive to work the engine cut out.no restart. Notice no check engine light. Check fuses and Ecm B fuse burnt.had a pack of 6 10 amp fuses.the rest of my drive to work it blew 10 more fuses. Last 2 was 20 and 25 amp as I was 2 min from work. I know that's a big no no.I made a remote fuse holder for glass tube fuses and it only blew the fuse once on my drive home.that happened when I hit the gas hard.recently I changed the wire harness for fuel pump relay with a used one and the used relay.also replaced oil switch and harness as they had turned green.the green corroded wires in the pump relay had left me stranded witch is why I replaced a few obvious things.drove a few weeks with out issue then suddenly this.it has frame mounted pump.the Ecm B as far as I can tell feeds the Ecm power and pump relay and also power threw oil switch. Can a bad relay or bad ground for fuel pump or anything to do with chip blow fuses.thanks