sorry I didn't get back to you on txt yesterday was in slough working
have you checked if the wiring is there ?
it is on quite a few cars.
if it is its a quick job with just changing a fuse in either side of car
I don't think the rs4 can be put it
something to do with the rev counter
but you can convert them with the dials etc.
that's what I had to do but that was 3 years ago.
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