Videos of 2 speed furnace fan motor wiring Click to view on YouTube3:22Explained! HVAC Furnace Blower Motor Wire Color Speeds: Color Code, How to Test to Verify Speeds!105K viewsYouTube · 4/3/2016Click to view on YouTube9:03Wiring a 3 Speed Blower Motor11K viewsYouTube · 2/13/2018Click to view on YouTube4:22How To Wire a Furnace or AC Blower Motor DIY624K viewsYouTube · Click to view on YouTube3:01240 volt PSC Blower Motor Fan Speeds- Wire Colors, Speed Selection Without Wiring Diagram!55K viewsYouTube · 8/21/2016Click to view on YouTube6:552- Speed Electric Cooling Fan Wiring Diagram117K viewsYouTube · 9/10/2012Click to view on YouTube6:05How to wire a dayton 115v 2 speed motor from high to low1 viewsYouTube · 7/20/2018See more videos of 2 speed furnace fan motor wiring hvac - Correct Wiring for Furnace Blower Motor - Home After getting my furnace blower motor replaced, it now runs only in the following scenarios: 1. Mode "Cool" Fan "Auto" 2. Mode "Cool" Fan "On" 3. Mode "Heat" Fan "On" In other words it will not run when in "Heat" mode with Fan "Auto". I believe it could have something to do with the way the motor is wired.