Here's a link to a picture of the blower motor with the heater box out of the car. On a left hand drive car, this is on the right side right above your feet. You can get to the blower motor by removing a foam closeout panel under the dash on the right hand side of the vehicle. Unplug the blower motor electrical connector at the motor, remove two 6 mm screws from the bottom of the blower motor housing and it slips right out.
http://986forum.com/forums/general-discussions/65595-where-ac-blower-motor-resistor.html
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