Originally Posted by zicc
I tried searching with keywords like audi/a7/HID/replacement/change/DIY... but I can't find any guide for A7. I get tons of links for Q7 though.
I searched using "audi bulb a6" and found nothing for the C7. Check out the Q7 videos. Audi should be using the same methods on all models.
Take lots of pictures and write a DIY when you figure it out.