I'm Trying to convert one of our Token Rides to a Play Card Reader. It's a Digital/CPU Comparable Electonic Coin Selector. The wiring harness had the red, white, black and Grey. I know that the red is 12v and the black is ground. When I took out the coin mech to hook it up to the card reader, only the red, white and black were attached. Those are the only three wires coming from the ride itself. Our Card readers are from Applied Resources, INC/Core Cashless which use what i call rainbow cables. I'm having issues with the ride coining up. and if anyone is familiar with the Core/Applied wiring, which wires go where to coin up the game. I usually do not have this much trouble which is why I reach out to you all. THANK YOU!!!