2008 F250 Blower Motor. No heat or ac 2007 f250 6.0l. I finally cleared the contacts and it's been working great for the last year.
Apply penetrating oil to the resistor wiring harness. In this video i teach you how diagnose a bad blower motor. I have a 2008 f250 superduty and my blower motor speed switch is as follows:

A/C Heater Blower Motor Connector.
If you have automatic climate control then the system has a blower motor speed control. My blower motor kept messing up. Blower motor resistor with manual temp climate control replacement for escape expedition fiesta mustang navigator f150 f250 f350 f450 f550 super duty control module heater cold ac air condition.
(When The Motor Is Not Working) If Power And Grounds Are Good, Replace The Motor.
If i bypass the blower motor than it will turn on. I finally cleared the contacts and it's been working great for the last year. Wire without dual zone ac, with supplemental heat.
The Blower Motor Assembly Is Designed To Push/Pull Air Across The A/C Evaporator.
Select a store to see pricing & availability. Order oem ford blower motors at wholesale prices for all ford models. 1,2 and 3 is speed 3, 4 is 4, i have replaced the blower motor resistor and now replaced the whole 3 dial heater control in.