Horn circuit for BMW 5 series E60/E61 (2002-2007)

BLK WIRE BRN (OR WIRE BRN WIRE BRN/YEL WIRE CAR ACCESS SYSTEM ELECTRONIC STEERING WHEEL MODULE GRN WIRE GRN/YEL WIRE GRY WIRE HORN SWITCH (2006) HORN SWITCH (EXCEPT 2006) HOT AT ALL TIMES FUSE HOLDER, FRONT FUSE 28 LEFT HORN NCA WIRE RED WIRE RED/BLU WIRE RIGHT HORN STEERING COLUMN SWITCH CLUSTER VIO WIRE VIO/BLU WIRE VIO/GRY WIRE WHT WIRE