Wiring Diagram 3 Way Light Switch. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. A three conductor cable with a ground is then installed between the two 3 way switch boxes.
Three wire cable runs between the switches and 2 wire cable runs to the light. The black or sometimes red wire also known as the hot wire goes into the brass screw. Two wires between each switch.
Wiring diagram 3 way switch with light at the end in this diagram the electrical source is at the first switch and the light is located at the end of the circuit.
Plus learn how to. Green for ground terminal. The light switch has three wires. All three switches are connected together by a three core and earth control cable.