4 Way Intermediate Switch Wiring Diagram. In fact a dimmer can be used this way in place of any of the 3. 4 way dimmer switch wiring diagram.
In this circuit the power comes in through the first switch. 4 way switch wiring diagram with the power feed through a switch. This diagram is a thumbnail.
In this circuit the power comes in through the first switch.
The wiring diagram further down depicts another choice of wiring method. When the switch knob is up the terminal contacts of intermediate switch connect terminal a with terminal c and terminal b with terminal d as shown in fig 1a. The schematic diagram below shows how all four way switches are wired. In fact a dimmer can be used this way in place of any of the 3.
