My project Mame cab has a standard Jamma connector in it 3 buttons wired up for each player. The controrl panel actually has 5 buttons for each player, but one button has no wires from it at all. One other button does have wires from it and there are also spare connectors in the loom (one for each player) but these are not currently connected.
Also inside there is another connector entitled "unigame" with a connectiton diagram pasted to the board..... what is this for?