Trackball on Track and field??
Any pictures?
Yeah the trackball versions came out a bit after the original run with buttons. Pretty interesting but apparently it makes the game easier (makes sense) never seen one in person though.
As far as the ground wires go, pretty much every metal surface should have at least 1 ground wire running to it, i don't know specifically what grounds go where but find metal and put a ground to it pretty much.
I am not too sure how to help with the track
though. If both
are working it just sounds like something is goofy with the wiring harness.