2005-2009 A/C Blower Motor Resistor
If you have lost the function of your A/C or heat blower motor in your 1994-2004 Ford Mustang, or you are replacing the blower motor, it's good preventative maintenance to replace the Blower Motor Resistor at the same time. This resistor is usually the culprit if your A/C or heater fan is malfunctioning. This is the blower motor resistor used on 2005-2009 Ford Mustangs equipped with factory A/C.
Guys if your blower is not blowing like it should but when you first turn on your A/C and it blows fine and as the car warms up the air is not quite as strong from the vents, then this is the culprit. I just replaced this in my 2006 Mustang GT and it fixed the issue. The air comes out strong out of the vents! It is super easy to replace too. It's held by two bolts underneath the glove box on the passenger side!