Volkswagen Golf Mk4 (1997-2006) Horn circuit, with steering wheel controls

AIR BAG SPIRAL SPRING/ RETURN SPRING WITH SLIP RING BLK WIRE BLK/BLU WIRE BLU WIRE BRN WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM DUAL HORN RELAY FUSE 40 FUSE 5 FUSE PANEL FUSE PANEL (BEHIND LEFT SIDE OF DASH) GRN WIRE GRN/WHT WIRE HORN HORN SWITCH HOT AT ALL TIMES HOT IN RUN OR START IGNITION SWITCH LOAD REDUCTION RELAY MULTI-FUNCTION STEERING WHEEL CONTROL MODULE NCA WIRE OFF ORG/BRN WIRE ORG/GRN WIRE RED WIRE STEERING WHEEL CONTROL UNIT THIRTEENFOLD AUXILIARY RELAY PANEL (UNDER LEFT SIDE OF DASH) WHT WIRE YEL WIRE