A closure system for a vehicle includes a closure member movable relative to the vehicle between an open position and a closed position. The method includes obtaining electrical parameters at a node and a substation of an electrical grid, processing the electrical parameters of the node and the substation into processed electrical parameters comprising at least one of a voltage harmonic amplitude, a current harmonic amplitude, a geometric harmonic modulated signal, and a noise pattern. Each molded bushing block includes three bushings, each of which carry an electrical conductor that is over-molded therein.