Wiring A Four Way Light Switch. Return to location you plan to wire to verify that there is no electric flow to that device. A 4 way switch wiring diagram is the clearest and easiest way to wire that pesky 4 way switch.
I have a few of the most common ways in wiring a 4 way switch to help you with your basic home wiring projects. The power is coming into switches first. Return to location you plan to wire to verify that there is no electric flow to that device.
T2 from that switch is wired to t1 on the second 4way and t2 connects to the travelers on sw2.
Power from light fixture to light switch. At the lights the hot source is spliced to the black wire running between lights it does not connect to the lights. The power is coming into the light fixture first. The power is coming into switches first.
