A wiring system includes a wiring module and a functional module. The wiring module in at least one embodiment includes elongated holes or openings which are configured to engage or lock with prongs on a functional module to create a lockable connection. The wiring module and the functional module form both a physical and an electrical connection. In another embodiment, the wiring module has at least three elongated openings or holes, and wherein one of the openings or holes is for receiving a ground prong, while the other openings or holes are for receiving prongs which conduct electricity or communicate information. In another embodiment there is a wiring module that has four elongated openings or holes with all four of these connections associated with the four elongated openings or holes configured to conduct electricity.