Where is the HVAC blower motor control module located? on 1990 Mercedes-Benz 560SEC

No blower operation at any speed, blower motor is good. I need to locate the blower control module to test it and its wiring. Where is it located?

Asked by for the 1990 Mercedes-Benz 560SEC
Blower motor controller (bed of nails) is located inside the blower motor housing next to the motor and is accessed from under the passenger side of dashboard. It is held to the blower housing cover with 2 through bolted studs.