Im building a winch front bumper for my heep this weekend. My winch came in the mail last week. I am very electricly inclined so wiring it is not a problem. My question is with the battery isolator. Im putting my own kit together and have been shopping around for an isolator. I have found them from 75 amps all the way up to 250 amps. I think im going to run twin 800ish cca batteries. How large of an isolater do I need. Im looking for people who have actually done this or have seen it done.