Connection Diagram Of 3 Way Switch. The goal is to place two switches at separate locations which control the exact same device. For example they can be arranged so that the feed cable runs to the first three way switch then to the light fixture box then to the second three way switch.
Pick the diagram that is most like the scenario you are in and see if you can wire your switch. Wiring diagrams for 3 way switches 3 way switch diagram 2 above shows the electricity source starting at the fixture. Conventional 3 way switch wiring configuration.
This might seem intimidating but it does not have to be.
So what you should see if you have correct 3 wire electrical cable romex is a black power white neutral and now a 3rd red wire. With conventional wiring the common wire from one switch connects to line the common wire from the other switch connects to the load lights. For example they can be arranged so that the feed cable runs to the first three way switch then to the light fixture box then to the second three way switch. So what you should see if you have correct 3 wire electrical cable romex is a black power white neutral and now a 3rd red wire.
