Yep... exactly what happened. Some of the early games just flat out got wired backwards. I should have caught it, but luckily Rob Anthony did so we could correct. He's a good dude like that any only yelled at me a little. Taro would have caught it sooner but Rob says he drools on his multimeter too much.
KingPin would have caught it, but he was busy driving everywhere, raising fish, growing lettuce, delivering games, storing games, fixing games, riding his motorcycle, and having a baby.
Just follow the photo I sent and you'll be fine.