Three Wire Switch Diagram. Knowing how to wire a three way lighting switch comes down to understanding the operation of this contraption. If you follow this how to you will be leaps and bound.
Take a closer look at a 3 way switch wiring diagram. The diagram below will give you a good understanding of what this wiring consists of. The source in this circuit is at the first switch and the light fixture is.
3 way switch wiring with.
At each switch in the above 3 way switch wiring diagram the black wire gets connected to the common copper or black screw. To get started take a look at the first diagram below. Regardless of what 3 way switch wiring diagram you re following you ll need to use a 3 wire cable to connect the two 3 way light switches. The common terminal of the second 3 way switch connects to the light fixture s.
