Good to hear that it works for you, I had not read any reviews of it or I might have gone that route. I am going to mute with the V1Driver app.
Why go to all the trouble of finding switched power when you can just use a savvy into the old port + a bob. It mutes below a chosen speed (35mph in my case), and the whole install in my Macan took 15 mins.
Have exactly the same setup in the wife's golf r.