Is their anyone one that can help me understand the communication circuit between the upper control panel and the lower motor control board pictured here I have been trying to find the complete schematic for the ( PCB )motor control and have only been able to find bits and pieces of the circuits and haven't been able to learn how the to communicate with each other and the circuits they go through. The Five pin CN5 comes from the control panel and the 3 pin CN8 I believe is for the potentiometer on the incline motor. Any information or help will be extremely grateful. Have a big project in mind using this system.