forum.audiv8.com Foren English Audi V8 Forum servotronic

yes, you can. Best is to Google it. On the 3,6 it's the Delco unit, on 4,2 the - uhm - 65? channel Hella unit.

Cruise may be a broken controller if you have a 4,2, a pretty common problem. Otherwise it may be a mechanical issue.

But sort out the speed signal possiblity first.