Well done!

The R45 2.0 KV6 came with cruise as standard so it wont be a fitting guide but a repair guide.

I will do one if you like when I finally get it working, so watch this space.

Well the ECU arrived from ebay so I fitted it & gave the cruise a try, but you guessed it, still doesn't work so it's back to the drawing board but I'm running out of ideas.

I don't know if this is of any use - https://www.blackbox-solutions.com/shop/help/SM039.html