Marine Electrical Supplies for Boat from Jamestown Distributors. We are proud to offer all the supplies needed to rewire boats of all sizes. Although this is a job that should be performed by experienced persons, it is often necessary for an owner to replace faulty components in their boat's electrical system. Typical repairs include; replacing worn battery terminals or cable, upgrading an electrical panel, changing blown fuses, as well as adding layers of tape or heat shrink sleeving to vital wire connections.Marine Electrical Supplies for Boat