Been watching this thread for a while.... thought i better throw in some inspiration
FGX Sync 2 ICC wired up on my garage floor......
Then with a whole lot of mucking around installed into my MK1.... Working..
Current Issues
Will not turn on with Ignition (The cluster sends a turn off / off command, this is missing in mk1 cluster) however it will turn on manually if you push the power button, however it turns off if unused for 10 or so min.
Air-conditioning recirculate does not work
Outside temp incorrect just as mk2 however you can turnoff the reading.
Climate control does work.
Emergency Assistance malfunction message when turning on (In-compatible airbag module)
Voice command will not work without a FGX cluster.... and i believe fgx cluster wont work without fgx / mk2 pcm and matching modulas) as it takes the steering wheel input and converts it to a can bus massage to start voice command