Through Light 3 Way Switch Wiring Diagram. Wiring diagram 3 way switch with light at the end. All three switches are connected together by a three core and earth control cable.
Install the three way switch by routing the black wire that goes into the box under the dark screw on the bottom of the switch and the redblack wire traveler wire under the brass screws on the top of the. All three switches are connected together by a three core and earth control cable. This is also known as the conversion method since it is the easiest way to add a second light switch to an existing circuit.
In this updated diagram 3 wire cable runs between the receptacle and switch and the red cable wire is used to carry the hot source to the switch.
Red and blue wires link traveler terminals of both switches. The two wiring diagrams above are of a 3 way switch setup and the same basic setup with a 4 way light switch added. This 3 way light switch wiring diagram shows how to do the light switch wiring and the light when the power is coming to the light fixture. The travelers are the same as s4 method 2 the neutral is the same the only change in.