4-way switch wiring diagram power at light. Now, let's go over this type of setup: We are including PDF files, so you can see the picture in greater detail (schematic & wiring). In the picture given above, a 14-2 cable (2 wires with the ground) is being used and it is running from the light fixtures to the three-way switch. A Three-wire cable.. It is very important to pay attention to these as shown in the 4-way switch diagram. When wiring a 4 way switch circuit as shown below, you will use two 3-way switches and one 4-way switch. If you wanted to add a fourth switch to the circuit you would need another 4-way switch wired in the middle in the same way as the first 4-way switch.
Four-Way Instructions; FOUR-WAY SWITCH DIAGRAMS. The schematic diagram below shows how all four-way switches are wired. The wiring diagram further down depicts another choice of wiring method. A 4-way schematic. Use this switch when more than two switch locations are needed to operate the same light.. Wiring a 4 way light switch may seem intimidating at first, but with the right information and a step-by-step diagram guide, you can easily complete the task yourself. By understanding the basic principles of electrical wiring and following the proper installation procedure, you can have your new 4 way light switch up and running in no time.