Blower Motor Resistor Block: Description
WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
The blower motor resistor is mounted to the bottom side of the HVAC housing near the blower motor. It can be accessed for service from underneath the instrument panel.
Courtesy of DAIMLERCHRYSLER CORP.