Hi Big Del.Interesting we have a big Del and a little del
I fitted Cruise Control to my 02 reg. Vectra 2.0 DTi by just buying a new indicator stalk with the CC buttons on the end. The clutch switch and the different brake switch are already fitted and the ECU is also ready enabled. Took about 10 minutes to sort out at a cost ofTry lookin on WWW.TYRESMOKE.NET in the audi groups. There's lots of info and lost of people to give advice/assistance.
Good luck