I have for sale a used Farringdon Steering Wheel Display. We do not use this any more as we have been making our own steering wheel for the past couple of years.
I can confirm that this did work when we last used it but you will need a wiring diagram in order to connect it all back together.
More info is available here - http://www.farringdoninstrumen..._wheel_displays.html
Picture of the steering wheel -
Please let me know if you are interested in it.
Thank you.