Swap out those old crappy 3-way light switches for good - CNET
Light switch short when switched up and is on when down. 2 black 1 red wire : r/electricians
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electrical - Light Switch with 2 black wires and one red - Home Improvement Stack Exchange
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home wiring help - replacing light switch with 4 wires (2 red/2 black) | Electricians Forums | Electrical Safety Advice | Talk Electrician Forum
2 black wires, 2 white wires, and 1 red wire - DoItYourself.com Community Forums
Two black wires for a switch
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electrical - Changing old light switch 2 black wires and 1 red - Home Improvement Stack Exchange
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Need help wiring a light switch with two black, two white, two ground, and one red wire which is hot. : r/askanelectrician
Installing New Wall Light Switch with 2 Black and 1 Red Wire to Single Pole : r/askanelectrician
Two black wires one red wire : r/askanelectrician
