Horn circuit for FIAT 500 II (2007-2015)

BATT BAR B (+) BLK WIRE BLK/VIO WIRE BODY CONTROL MODULE (LEFT END OF DASH) BRN WIRE BUS - CIRCUIT BOARD 25 27 CAN C (+) CAN C (-) COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FUSE HORN (LEFT FRONT OF ENGINE COMPT) HORN RELAY HORN SWITCH (IN STEERING WHEEL) HOT AT ALL TIMES HRN BATT FD HRN CTRL HRN SW SIG ORG/ WIRE PDC BUS BAR 3 POWER DISTRIBUTION CENTER (LEFT REAR OF ENGINE COMPT) RED WIRE RED/YEL WIRE STEERING CONTROL MODULE (ON STEERING COLUMN) VIO WIRE