I started working on this rebuild a couple of years ago, stopped, and am trying to pick it up again.
I replaced the monitor in the cabinet. So I had to remove the steering wheel. The steering worked fine, I thought before I took it apart.
There is a large molex plug that connects the steering to the PCB, there are also 2 wires - a blue and a red - that are not connected now. When I plug it up with the blue and red not connected - the steering now doesn't work.