I have 2 light switches controlling a single light, but they do not operate correctly anymore. Can you give me a way to determine which one needs to be replaced? - Quora
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How to Wire Two Light Switches With 2 lights with One Power Supply diagram | Electrical wiring, Light switch, Home electrical wiring
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Making one ceiling light circuit into multiple light circuits with fibaro dimmer 2 switches - Questions & Help - Homey Community Forum
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