When I put my battery in the trunk I ran my main hot feed from the battery on a 10 gauge wire right from the battery to my starter relay and I used a 60 amp cartridge type fuse for my fusible link. I have just all the stock items on my 63 and I added the Mopar electronic ign , electric fuel pump and the electric fan that I just added a few months ago. Other then that it is just a stock 63 wire harness setup. I use a stock 55 amp alternator and everything has worked fine since 2006 when I go it on the road. I carry an extra 60 amp cartridge type fuse just in case but have never needed it. Ron