This photo is an excellent reference for a proper install. Marine grade heat shrink wraps provide an electrical seal during salt and water conditions. This also seals the system to severe cold temps. This customer used a great setup. 3/8 Heater hose to protect the power cable, 14-2 construction grade wire, heat shrink connectors, Plus weather pack terminals. We offer technical support for all install needs. Use the "Contact Us" icon on the site to have your questions for your particular install answered. These kits are sold as an accessory. 3/8 heater hose not included in any purchase. Readily available at a parts store at a fraction of the cost of shipping.