Hi all - new to here but not to Audis as this is my third after being away to Alfa corner for a while. My car is a 2007 A4 Avant s4 quattro of which i have a few things that need sorting, firstly I bought some parking sensors (dolphin, colour coded ready) reason i had them is they work very well on a VW van i have before I fit them I need to know whether I can simply pick up the reversing supply from the rear light cluster or is it going to interfere with the can bus system (assuming there is one).

Thanks