If you installed more than a few thermostats, you’re likely to have come across many that have four wires. Typical 4 wire thermostat (t-stat) wiring examples follow. Some have the common (C) wire, while others do not. Both examples of ways to Wire Honeywell Thermostat with 4 Wires we describe next. Wire Honeywell Thermostat with … Continue reading Wire Honeywell Thermostat With 4 Wires