Jeff, I used a 30 Amp relay... spliced the burnt wire and ran it to the relay. Ran a new 12 gauge wire, fused, from the copper bus(grid) to the relay.
Jeff, herre are some pics of how I did it
The top pic is where I got the power for the relay. The red wire in the center is the wire I ran. Make sure you fuse it with a 30 Amp fuse.