Videos of furnace blower fan wiring Click to view on YouTube4:22How To Wire a Furnace or AC Blower Motor DIY615K viewsYouTube · Click to view on YouTube3:22Explained! HVAC Furnace Blower Motor Wire Color Speeds: Color Code, How to Test to Verify Speeds!103K viewsYouTube · 4/3/2016Click to view on YouTube3:55Install fan switch/wiring on furnace "GREEN WIRE" EASY FIX5 viewsYouTube · See more videos of furnace blower fan wiring How to Wire a Thermostat to Your Furnace Blower | eHow www››Heating & Cooling RepairHow to Wire a Thermostat to Your Furnace Blower. Thermostats have the ability to be wired to the furnace blower. This allows the homeowner to run the blower without the heat or air conditioning on. This is like having an air circulation system in the home. The air is taken back to the blower through the return air ducts to the furnace and is then..