Connecting Cables JP5760 Easy-to-install cable plugs make connections a snap. Connect Expansion Hubs to Light Hubs, Expansion Hubs to Expansion Hubs and/or connect any Hub to train power pack or DCC system. 2 – 48″ Connecting Cables/pkg About Just Plug Lighting System No electrical knowledge or special tools needed…just plug and you’re done! The Just Plug