Hi all, I am trying to Install an HS220 on a 3 pull switch. The wires coming out of the wall are 2 black, a white, and a bare copper. The Switch lights up but won't turn the lights off and on. I wired the 2 blacks to the "live" and "load" screws. The white to the wire and the bare copper to the green wire. Did I wire wrong? Not sure what the issue is.