Wiring A Three Way Switch With Two Wires. Double light switch wiring common how to wire a 3 way light switch diy family handyman how to wire a light switch. 3 way switches are typically used to control one or more fixtures from two different locations.
Either way complete these five steps for 3 way light switch wiring. The red and black wires travelers of the 3 wire cable get connected to the brass terminals on the three way switch. At the line switch box the black wire of the two wire line cable gets connected to the common copper or black screw terminal on the three way switch.
At the line switch box the black wire of the two wire line cable gets connected to the common copper or black screw terminal on the three way switch.
At the switch where you found power in step 2 put the other 2 wires you removed from the switch together and wire nut them. In building wiring multiway switching is the interconnection of two or more electrical switches to control an electrical load from more than one location. Add an electrical box for the second 3 way switch in the basement. This is a common configuration in hallways and staircases.
