I'm trying to hook my heat strip and I have 4 wires come from the fuse box that were hooked up to the old furance, I'm trying to figure out where they should go into the new air handler I have 2 60 amp and 2 30 amp breakers. With my main power hooked up I have 2 30 amp breakers open.

Why do you have 4 breakers? There should only be 2 for a 15 kw a 30 and a 60