Abstract: A simple and inexpensive locking device used to secure the electrical connections between the male and female electrical connectors of a typical photovoltaic module. The cover secures high voltage connections from potential access by unqualified personnel. This locking device holds the electrical connection together over time ensuring that expansion and contraction will not negatively impact the electrical connection. The locking device is such that one half lock, when turned over and reversed, mates with the same identical shape, completing one unit. It is intended to be installed quickly and easily in both difficult and typical locations by hand, with hand pressure only. A standard electrical industry tool is needed to open the lock and access the underlying electrical cable, as required in high voltage applications. End barriers on the locking device secure the electrical cable from accidental or intentional separation by hand.