Lots More InformationRelated HowStuffWorks ArticlesHow Light Bulbs WorkHow Fluorescent Lamps WorkHow Power Distribution Grids WorkHow Light WorksHow does a three-way light bulb work?How do touch-sensitive lamps work?More Great LinksHandymanWire: Wiring a 3-Way or 4-Way SwitchThe Magic of a "Three Way" SwitchThree-Way Switch CircuitsThe Three-Way Switch How-To