@lstoll posted:Thanks Vernon . The board is for the gp7 reading diesel. the same board you sent the picture of. I do believe it does not have a tach reader.
Again, please check your original order and part number when you got that board from Lionel. Also, an actual picture.
If you try to run a board that the firmware is checking for a tachometer, it will run away full throttle because it's trying to achieve a motor rpm that never would get reported- because there is no sensor plugged in.