alternator wires

Ok, i'm all ears. What should the recommendation be for a maxifuse in this alternator circuit? Is there some sort of chart online i can use to calculate this.

If i am to remove the stock fusible link out of the body harness. It is a 16 GA link attached to a 12 GA red going back to the battery. I would assume Maxifuse here as well? This is the batt hot that feeds the body harness. I dewired my ammeter and tied the 2 leads together.