» CornerHardware    Instructions for installing a programmable thermostat.    http://www.cornerhardware.com/howto/ht018.html

» Homestore.com    Illustrated tutorial provides step-by-step instructions on installing a setback (programmable) thermostat.    http://www.homestore.com/HomeGarden/HomeImprovement/HowTos/HowTos/CRHW_InstallingProgrammableThermostat.asp

» How Stuff Works    Detailed illustrations on how thermostats work, wiring, and components.    http://www.howstuffworks.com/home-thermostat.htm

» LUX Products    Troubleshooting chart.    http://www.luxproducts.com/trouble_shoot/oper_tx9000_tx1500_tx1000_tx500.htm

» SSHC Inc    Astrostat installation and wiring instructions.    http://www.sshcinc.com/TSSHC-1LV.htm

» Thermostats USA    Information on application, features and benefits, and troubleshooting.    http://www.thermostatusa.com/Tech.asp

» White-Rodgers    Installation and operating information for digital programmable thermostats.    http://www.white-rodgers.com/