Nba Jam Arcade

I have a 2 player cabinet that was converted for the Simpsons arcade game. It has two joysticks and two buttons for each player. I want to convert it to the NBA Jam but do not know how. I looked around and it seems that both Simpsons and NBA Jam are jamma, it should be a swap and play, but the problem I have is: 1. Do I need to buy a special card jamma NBA Jam for 2 players or should I just buy the regular PCB? 2. Jam NBA requires three buttons per player, so if my son has only harness connections for the 2 buttons, how do I add a third button for NBA Jam? Is the PCB NBA Jam come with its own bundle of son who has connections to three buttons? Sorry to be a noob. Thank you!

If you ask this in the video games and online class, or actually, even in games (I know this is not the right category, but many questions seemed decent answers there) you can find someone one who can help. Ask at the Consumer Electronics may be another option. Many unanswered questions seem to go in this category.

Good games are both JAMMA + (note the +)

252B% http://everything2.com/title/JAMMA