4 Way Switch Wiring Diagram - Easy Do It Yourself Home 4 way switch wiring diagram for free to help make 4 way switch wiring easy. 4 Way Switch Wiring Diagram A 4 way switch wiring diagram is the clearest and easiest way to wire that pesky 4 way switch.3 Way Switch Wiring Diagram · 4 Way Switch Wiring 4 Way Switch Wiring Diagram | House Electrical Wiring Diagram 4 Way Switch Wiring Diagram. The hot is connected to the common on the switch and the neutral is spliced to all the switch boxes through the neutral terminal of the light. The switches connecting the travelers are connected with a three wire cable. A 2-wire cable is used for the purpose of connecting the last switch to the light fixture.