Now, I thought you said they all work? Or are you just saying that's what you were told?
The CPS2 game needs an A board, yes. The A board has the JAMMA edge you'll need to connect to.
When you connect the A + B, if it comes with clips, use them, if not, ensure you have a really good connect by pressing with your palms, directly down on the 4 connect points.
Attach the harness to the A board JAMMA edge and turn it on.
One of 3 things will happen:
1. The game will start
