First of all love the new forum and I would like to apologize to Cristiano for not replying to your last email many many months ago. (life got in the way big time)
Just like to let any Aussies on here that I have a VT Commodore Dash working, both Speedo and Tach, only 1 at a time as I need another RevBurner.
I have pinouts available if anyone interested and also .xml settings to save you some work.
To get the Speedo working I had to move the 5v-12v jumper to 12 volts for it to work, kept getting critical error in Simdash software when trying to calibrate.
Heres a quick vid of speedo working and you will also notice the overspeed alert also works which I will adjust as pit speed warning.
http://youtu.be/UoL674aNZrM