I am looking for the dashboard switch that controls the air and heater blower motors, it is a multi position switch that gives variable speeds to the blowers. Prevost does not have any in their system and it is made in France. I have 24 volts into the switch but neither blower motor will work in either air or heat mode. If anyone knows of a vehicle being parted out or even has one that I could borrow for further testing or knows of where i may find one let me know. Without the switch I cannot get air or heat to dashboard area. Thank you.