Rob,
One thing thats kind of sad now is Bromley is just an importer of games...they no longer manufacture them...they have the games built to their specs overseas...Sad but true..
At my work we have a lot of Bromley (Universal Space/Unisys) games...the parts support and tech help on even those is shotty at best, simply lots of stuff gets lost in translation...We had a batch of wiring harnesses that came from Chine wrong, that bromley never checked, that our field techs had to discover and correct the error then tell Bromley about it and how to correct it.
What model main CPU is it? Can you post a pic? I may be able to scrounge something up from games of Chuck E Cheese past...
Josh
Also if you cant find one I may be able to find a manual for Whell Em In...Or the original...i will let you know.