electrical - Is it possible to wire up multiple 4 way switches with power coming into one 4 way and the lights connected to the other - Home Improvement Stack Exchange
How to wire a light switch: simple switch, 3-way light switch, 4-way light switch wiring
Help! I wired a 4 way switch. Triple checked the connection. When the first three way switch is toggled off the other 4 way switch and 3 way do not power the
4-Way Switch Installation - Circuit Style 2
wiring diagram for a 4 way switch with 2 lights | Light switch wiring, Electrical circuit diagram, Basic electrical wiring
3 Way and 4 Way Wiring Diagrams with Multiple Lights - Do-it-yourself-help.com