Thanks Badmouth for your help
To Mike A - obviously if fixing this machine was as easy as buying a board on ebay i would not have asked for help. This cabinet has been gutted and rather than pulling the monitor and coin door and breaking it down i am trying to make something of it, but there always has to be some person who has to give the old "what a shame" or "original is best" bull. Sometimes it is just not economically feasible to repair them all the "right" way . I was hoping that there might be a way to get a multiboard, set it to run one game and wire up the steering wheel, pedal and shift to jamma. I mean, if the steering wheel is Left and Right, and the pedal is up and down, and the shift is P1 Fire, there must be a way to make it work. I just dont know if the fact that the pedal has more or less depending on how you press it can be translated. I just dont know enough about driving games.
Analog controls don't work that way...
The steering wheel has a couple options 270 degree, or 360 degree and has different rates at which it can be turned, i.e. turn faster makes a sharper turn. It's not just left or right.
The shifter isn't a fire button. The game is set to tell what position the shifter is in and tells you what position it should be in. For example, in Pole position, there is low or high. Fire up Mame and you'll see how it doesn't translate to a fire button.
The pedal... well, you got that right. Usually, 50% of the way down = 50% gas, but some games treat it as a on/off (like super sprint/off road).
As soon as you can wrap your head around the different steering wheel options, combined with all the shifter (automatic, manual, various buttons like turbo), and the pedal configurations (gas, brake, shifter) you'll understand that while there may be a good deal of driving games, there aren't as many that match any 1 configuration that you may have. Or, do like me, build a cabinet and realize the amount of games your cabinet accurately plays is much less than you thought. Lastly, great arcade driving games are few and far between.
Your best bet is to put a console in it.