Ok so I am working on a Taxi for a friend and this machine has had the MPU board removed many years ago. I didn't remove the board so I am having some trouble finding a good reference on where all the connectors go. Luckily the owner marked most of the connectors prior to removing the board. That being said I am down to one last plug that isn't marked and I have no idea where it goes. I can't get much from the schematic so I figured I would snap a couple of photos and see if the inside group could lend me a hand.
I have a long ways to go on this one, but I'd like to at least get it booted up and trying to play so I can start from there.