Help with light switch replacement, replaced one of the switches and it worked fine for 3-4 hours and now neither switch works to turn on the lights, everything else works on the
Explained] How a 2 Way Switch Wiring Works?
On my two-gang light switch, why does the second switch only work if the other switch is also turned on? - Quora
How To Wire a 3-Way Switch: Diagrams and Instructions
electrical - Wiring two light fixtures on a switch - Home Improvement Stack Exchange