diesel generator control panel wiring diagram – genset In this diesel generator control panel wiring diagram you can see the details on how to make a generator control panel using the BeK3 generator controller. This is a general wiring diagram, it indicates all features of a state-of-art AMF ATS control panels. You can reduce the number of components according to your needs. Onan Control Board Operation - GMC motorhome MOTOR GENERATOR WIRING DIAGRAM Large View. 4. CIRCUIT BOARD SCHEMATIC DIAGRAM Large View. 5. Verify remote control wire function (upper terminals) before install. It must be replaced with a genuine Onan control board before repair @ $$$$$ 19.