CornerHardware: Instructions for installing a programmable thermostat.
Homestore.com: Illustrated tutorial provides step-by-step instructions on installing a setback (programmable) thermostat.
How Stuff Works: Detailed illustrations on how thermostats work, wiring, and components.
LUX Products: Troubleshooting chart.
On Q: Installation and wiring instructions for thermostat with remote monitoring capabilty.
SSHC Inc: Astrostat installation and wiring instructions.
Thermostats USA: Information on application, features and benefits, and troubleshooting.
White-Rodgers: Installation and operating information for digital programmable thermostats.