Im installing the shift knob winch controller and im having some trouble with the wiring. I have a satv 3500lb winch and the rocker switch that came with the winch has a red and black wire. The new winch switch has 3 wires. A red a black and a green. It says to tie into the existing switch wires and I did with the red and black. Do I just ground the green? When I power the rzr by turning the key on the original switch works but the new one does nothing. Any help would be appreciated.