OK, that helps.
I think there is also some calibrating "targets" / equipment that goes with this process.
I would be as patient as you can and wait for others to chime in with advice as this is a retro-fit and won't be straight forward.
Also, This business in the UK specializes in retro-fits and may have some valuable advice for you. Perhaps you can give them a call?
Audi retrofits online from HazzyDayz. We stock a range of Audi accessories & aftermarket parts. We specialise in Audi electrics & fault diagnostics.
www.hazzydayz.com
VW & Audi retrofit parts available online from HazzyDayz. We specialise in genuine vehicle electrics & fault diagnostics for Audi & Volkswagen vehicles. ADAS calibration
www.hazzydayz.com
Also, since you apparently own a you could become Verified and then you could post in the Retrofit section of the forum and get a lot more attention with your project.
If your status is something other than a "Verified" user, that means we could not find you in our customer records when you joined the forum. This could be due to one of following: 1) You didn't give us enough information. Perhaps you didn't provide a serial number, or maybe you're using a...
forums.ross-tech.com
@Uwe , Since the was not posting Legitimate information Admin may delete this post. Feel free to delete if necessary. Otherwise, I'll leave it posted so others passing through (searching) can benefit from the links and information posted here.