1 X Circuit Board. HK42FZ009, 1012-940-L, 1012-940-J, 1012940L, 1012940J. Furnace Control Circuit Board. Note: We need this information to flash the program. 1? The model of the car? Serial number 2? Engine Brand and engine model. 3? How many rounds of your wheel motor? Aaha-parts specializes in electrical parts which fit various heavy equipment. Electrical parts are used to drive the mechanical components to work properly. They are the drive control part of the heavy equipment.