I just bought a bathroom fan which needs a seperate wire to control the fan, light, nighlight and humidity control. Each one is designed to be wired to a separate switch, not an ideal design. I'm trying to find a way to control them without switching out to a bigger gang box. I hoped to add the light to my current light circuit, and somehow setup the nightlight to turn on/off inversely with the main lights. So when the main lights are on, the nightlight is off. Any ideas?
Sorry if this has been asked before. In searching I mainly found issues on poorly wired three way switches.
Best Answer
A three-way, or single pole double throw (SPDT), switch should be able to do what you want.
When the switch is in one position, the main light will be on. When the switch is toggled the other way, the night light will be on.
Crappy diagram of three-way controlling two lights