Old 3 Way Switch Wiring Diagram. The smart switch on the other hand works great, unless the old switch is flipped up, then it doesn't work at all. I'm preparing to wire a circuit with two three-way switches.
But with many switch and device arrangements. This is usually a green screw located on the top or bottom of the switch, mounted to. Three-way switches allow you to control lights or receptacles from two points.
Three-way switches allow for controlling a light fixture from two separate locations, these are usually used at the top and bottom of a flight of stairs or at two different entrances to a room.
I'm preparing to wire a circuit with two three-way switches.
They've also remained largely unchanged for decades. It's possible that you have a wire disconnected, but more likely the switch is the problem. Three-way light switches control a light from.
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