Sega touring car cab help

[shoryu]

Hey all,has anyone got one off these , I got one 10 years ago ,put it in storage as I moved house (took only my prize cabs) and now I'm back to it . It did work originally. Some connections seem to have come loose.
These Sega cabs are like looking into a bush for me, so many wires and boards and I cannot find a decent wiring diagram I can actually read anywhere