The Magic Ceiling Fan Light

These kids think the ceiling fan is obeying their commands, but someone has a remote control hidden behind his back.
Duration : 0:1:13

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I need to add a ceiling fan to a small toilet and shower room to operate separately from the light switch?

If I take power from the existing ceiling light can I add a switch to this supply giving me the option to have the fan on when the shower is in use if so what kind of pull cord switch will work? or do I need to run a new supply from somewhere else in [...]