Combination Single Pole 3 Way Switch Wiring Diagram. Otherwise, this may confuse you a little. Three-way wall switches control a light fixture from two locations in a room.
Remember that the wire that has a black, white. The diagram kept me cool when messing with all those wires. NOTE: If the wiring in your wall box does not resemble any of these configurations, consult an electrician.
Single-pole and three-pole -- or three-way -- switches look almost the same when installed, but there is one big difference.
For starters, it doesn't have "OFF" and "ON" printed Not all three-way switches have these terminals placed in the same configuration, so you have to pay attention to their colors (and the instructions that.
Remove existing wallplate and switch, if applicable. Three-way wall switches control a light fixture from two locations in a room. They are always installed in pairs and use special wiring connections.