Videos of mercury thermostat wiring to nest Click to view on YouTube12:19Upgrade from Mercury to Digital Thermostat172K viewsYouTube · 2 years agoClick to view on YouTube4:58HOW TO: Installing a NEST Thermostat (2nd Gen)86K viewsYouTube · 3 years agoClick to view on YouTube2:46Nest Thermostat E Install (Replacing old 2 wire thermostat) - Check Video Description266K viewsYouTube · 1 year agoClick to view on YouTube3:37Replacing mercury thermostat with a digital thermostat - install wiring white rogers honeywell149K viewsYouTube · 4 years agoClick to view on YouTube6:20Thermostat Wiring Explained: Wiring Smart Thermostats, Nest & Ecobee298 viewsYouTube · 3 months agoClick to view on YouTube9:19Understanding Thermostat Wiring (Ecobee3 Nest Honeywell thermostat installation)13K viewsYouTube · 2 years agoSee more videos of mercury thermostat wiring to nest Installing NEST Thermostat - two wires - Google Groups Installing NEST Thermostat - two wires. Remove old thermostat base and install Nest base, make sure that it is level. Connect to terminals W1 and RH of the Nest. It is preferable that you match the R and W, but in a two wire system this really does not matter. Put Nest thermostat on Nest base. Program the Nest.