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Seat ventilation blower regulator, location/task/design/function - GF91.30-P-3102R

MODEL 230 with CODE (401a) Seat ventilation of front seats 

Shown on right front seat 

Fig 1: Identifying Seat Ventilation Blower Regulator Location - Shown On Right Front Seat
G05076874Courtesy of MERCEDES-BENZ USA
  Seat ventilation blower regulator, location The left front seat ventilation blower regulator (N29/5)  and the right front seat blower regulator (N29/6)  are located in the driver/passenger seat backrests.  
  Seat ventilation blower regulator, purpose The left front seat blower regulator (N29/5)  and the right front seat blower regulator (N29/6)  control the speed of the ventilation motors, depending on the control voltage from the seat control module.  
  Seat ventilation blower regulator, design The left front seat blower regulator (N29/5)  and the right front seat blower regulator (N29/6)  consist of electronics in a plastic casing with eight connections.  
  Seat ventilation blower regulator, function The integrated electronics in the left front seat blower regulator (N29/5)  and the right front seat blower regulator (N29/6)  keep the voltage supply to the ventilation motors constant at all times in accordance with the actuation voltage from the left front seat adjustment control module with memory (N32/1)  and the right front seat adjustment control module with memory (N32/2)  .
The blower regulators are designed as non-overloading linear controllers.