http://www.wfu.edu/~matthews/courses/p230/switches/SwitchesTut.html

http://www.youtube.com/watch?v=Wknz-Beb268

http://www.askthebuilder.com/707_4_Way_Switch.shtml

http://www.mccarthyplace.com/hobbies/electrical/three_way_switch/

http://www.askthebuilder.com/How_to_Wire_a_4_Way_Switch_Video.shtml

http://www.wfu.edu/~matthews/courses/p230/switches.html

http://www.handymanwire.com/articles/3wayswitch.html

http://www.thefind.com/instruments/info-4-way-switch

http://www.electrical-online.com/4-wayswitch.htm

http://www.ehow.com/how_5167408_wire-way-switch.html

http://www.shopping.com/xGS-4_Way_Switch

http://www.target.com/gp/search.html?field-keywords=4-Way-Switch

http://homerepair.about.com/od/electricalrepair/ss/switch_types_5.htm

http://www.wireityourself.com/four_way_switch.html

http://www.thecircuitdetective.com/3and4wyinfo.htm

http://www.selfhelpandmore.com/switch-outlet/4-way/

http://home-and-garden.become.com/4-way-switch?&kd=100432461&tc=13

http://www.guitar-mod.com/rg_4wayinfo.html

http://www.smarter.com/---se--qq-4+Way+Switch.html

https://www.smarthome.com/21504W/4-Way-Switch-White-Satin-9504WS/p.aspx