Horn circuit for Audi S4 B7 (2004-2008)

BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM FUSE 40 FUSE HOLDER GRN WIRE GRN/YEL WIRE HIGH TONE HORN HORN RELAY HORN SWITCH HOT AT ALL TIMES LOW TONE HORN NCA WIRE ORG/BRN WIRE ORG/GRN WIRE RED WIRE STEERING COLUMN ELECTRONIC SYSTEMS CONTROL MODULE VEHICLE ELECTRICAL SYSTEM CONTROL MODULE WHT WIRE YEL WIRE