Guide :Electrical Supplies : Decora Gray Rocker 4-Way AC Quiet Switch
2 way light switches in the hall
I have replaced a light switch in the hall without making a note of which wire goes where. I have wired it the same as the unreplaced one, but it trips when I switch the light on. There are 2 black wires and 1 red. Each switch has provision for 3 wires,1 marked common, at the top, and 2 at the bottom marked one way and two way. The unreplaced switch has the red wire in the common connector, and the black ones are in the bottom ones marked one and two way. What am I doing wrong????