Cool Adding A 4 Way Switch To A 3 Way Circuit

Connect the black wire of the new 3 wire cable to the common screw of the 3 way switch that you will move to the new location.

Adding a 4 way switch to a 3 way circuit. Turn off the correct circuit at your electrical panel. Bottom switch has power source feed. Answered january 1 2019 author has 2 5k answers and 582k answer views it is trivial to add a 4 way switch at a point between two 3 way switches.

The black and red travelers from both sides of the cut which are now coming towards the 4 way from both of the 3 ways will go into the in on one side and into the out. This tutorial will show you how to wire 3 way and 4 way switch circuits. Connect all traveler terminals.

Placement of the switches is the key to making these circuits work. Adding a 4 way switch past the ends of a pair of 3 way switches takes a little more effort. Start with a 3 way switch at the start and a 3 way switch at the end of the switch path.

The circuit has 3 3 way switches. To make it work you just have to place all the 4 ways between the two 3 way switches in the circuit. It s likely you ll also need to replace the existing switch box with a larger one to accommodate the extra wires for the 3 way switch.

Either way complete these five steps for 3 way light switch wiring. Connect the returning travellers from the new switch box location red and white and connect them to the in or the out terminals on the new 4 way switch. My advice worth price charged.

The 4 way switch will have 2 terminals marked in and 2 marked out. Place each 4 way switch one after another between the 3 ways. Add an electrical box for the second 3 way switch in the basement.