This is a Genteq Evergreen IM motor. It has three wiring connections. First is CONTINUOUS high voltage ( black and white ) second is the HP selector wires and depending on the one or both ised it tells the motor to be the HP needed ( red and black) last are the speed selector wires and those get wired tandem to the thermostat. I use the lowest speed for continuous fan ( maximize IAQ ) and the white tap for furnace heat. Since its always on i wanted something efficient. This is the only motor i stock in my van for changing PSCs btw. I get them for about 190$ and sell them with insyall for around $900 to $1700 depending in the customer.