How To Run A Three Way Switch. You will run the three conductor wire from the box you just ran power to, over to your other empty box. It's something that the majority of people would like to know and can be confusing.
I forget how to accomplish this task.
As before, a three-conductor cable joins the first switch and the fixture, but now a four-conductor cable runs from the To learn how to wire a three-way switch when both switches come after the fixture, and sort out other finish-wiring.
I am going to show how to wire a three-way switch. Thanks so much for taking the time to do this to help others (like me!) Three-way switches often control one light fixture at both ends of a hallway. A three-way switch has four different screw terminals on its body Three-way switches can be wired in a number of different ways, depending on where they are located relative to the light fixture in the circuit cable runs.