Im new to this forum and new to Audi's so please correct me if i break a rule. i followed KarlMarx's V1 DIY but im must be doing something wrong or A4 and A6(C6)'s are different. I really like the way he use the sunroof method but i cant get it to power up, my + wire is identical to his and i tried to touch the - wire to my bolts but it didnt power up, i didnt try to unscrew a bolt and touch it (like he said) but instead i just touch the screw. that part of his car is very similar to mine but not identical. i tried using a DMM but im an embarrassingly newbie to all this electrical stuff. i tested all over to get a 12v signal but i couldnt find it. can someone please help me locate the 12v wire and the negative ground wire where the sunroof panel is to power up my valentine1. Thank you so much in advance!