Source google image: http://www.forum-audi.com/img/members/5/Schema-electrique-pack-d-eclairage-interieur-avec-MMI-Radio-ou-MMI-Navigation-plus-Audi-A3-13.png
Schema electrique audi a3
Source google image: http://www.forum-audi.com/img/members/5/Schema-electrique-pack-d-eclairage-interieur-avec-MMI-Radio-ou-MMI-Navigation-plus-Audi-A3-13.png