Three-Way Light Bulbs

Add converting lamps from 1-way to 3-way as a skill I didn't know I had.  But really, it's simple, with the hardest part removing the existing socket from the screw post.  Only costs a couple bucks for the new socket.

Look closely at the sockets in the picture below.  The socket on the left is a 1-way switch, the one on the right the 3-way.  The 3-way has a silver tab on the black tab at the bottom, and that's the extra connection that's needed.  The 3-way bulb will have a matching connections.  Those two connections allow for the three levels of light.

http://groovygreenliving.com/how-to-upgrade-a-regular-lamp-into-a-3-way-lamp