Light Switch Two Red Wires One Black. Those two wires go to the switch and the blue-red wire goes to your lamp. Here is a three way switch wiring diagram.
But one switch has to be 'on' in order for the other to turn the light on and off.and vice versa.
Expert advice on how to wire a standard light switch, including helpful diagrams.
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If you have a blue and black wire coming from your household circuit, you should have two Red wire is sometimes included and acts as a conductor to carry power to the light kit. I placed the two black wires on the top portion (both copper colored screws) and the red wire on the black screw. If you have one wire into your switch box for your light. this is called a switch leg, the dimmer should be wired across the black and white wire wires.