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& Wiring Made EasyTwo Wire Light FixtureLutron Ma 600 Wiring DiagramSplit Electrical Wire Junction BoxCable Through Power OutletResidential Wire GaugeHow To Wire A Lamp SwitchHow To Wire A Relay For Lights