I have not seen this , but it works for me, wondering if there is a problem with this method. I run a jumper from one side of the coin switch in the door to one side of the start / credit button in the door. When the button is pressed, the coin switch adds a credit and the credit switch at the same time starts a game. My only concern is that this method will always keep the credit hold relay activated. Since it is a hold relay, I would think that shouldn't be a problem since it is not in an arcade that is on 8 hours a day.