How to wire a two way light switch?
A two way light switch is perfect for an area where you want to turn on the light at one end but want to turn it back off a the other end, such as a long, dark hallway. You will need to first run electricity from the breaker box to the location you want your first switch, then run a 3-wire cable from the first switch to the second and a 2-wire cable from the second switch to the light itself.