The 6.4 standard set includes two sets of military terminals, marine grade tinned ofc 1/0 cable is used for the grounds, as well as the crossover cable from battery to battery. The starter supply cable is 2/0 cable. We use an adapter on the passenger side positive terminal, to retain the factory fusable link, the body harness power, as well as you dual alternator trucks connect with no issue. On the passenger side ground, factory uses a single cable that’s cut open and mounted to the frame. These kits use a ground cable that goes from the terminal, to the frame, and then another cable from the frame to the block. So you’ll never have to worry about corrosion again. Huge improvement over stock.