How to Install a Fuse Box in a Boat | Gone Outdoors | Your Run a black cable from the battery to the fuse box and cut to size. Install wire terminals on each end. Attach one end to the negative terminal on the battery and the other to the largest terminal on the fuse box's negative busbar. Each electrical circuit on your boat should begin and end at the fuse box.Boating · Camping · Firearms Amazon: fuse box for boat Amazon: fuse box for boat. Skip to main content. Fuse Box Holder,Blade Fuse Box Holder with LED Warning Light Kit for Car Boat Marine Trike,Free Fuses for Fuse Block for Automotive(10 Way, Screw Type) by YOUNG MARINE. $20 $ 20. 99. Get it as soon as Tomorrow, Mar 19.