Why Does My 3 Way Switch Not Work May 21, 2019 Linear WD500Z installation issues. I"m trying to hook a WD500Z into a 3 way switch setup in a new house. This would be the master switch and, if I can ever get it working, I would put one of the WT00Z switches as a slave.Here& Volt Free Contact Diagram4 Prong 220 Outlet2 Way CircuitRed Wire Ceiling FanLow Wattage Garden LightsElectrical Outlet Screw ColorsGreen Wire Ground2002 Avalanche Radio Wiring Diagram