I have a York A/C which has a viable speed fan motor. A room that is the furthest from the air handler is either cold in the winter or hor in the summer. I want to be certain the motor is connected for the highest speed. Where can I find the wiring diagram, or can someone submit it here.

Thank you,
Alan

If it is a true variable speed with dip switches you better have a pro do it for you. You will need a special tool to set the airflow up correctly with a true variable speed system. BTW There is a drawing usually on the inside of the furnace door. The variable speed (DC ) motor systems do not like to be overloaded.