2003 2005 YFM45FAR, YFM450FAR Kodiak OEM Service Manual, Page 368Get this manual
SIGNAL SYSTEM 4.Horn does not sound(for Europe and Oceania) 1.Horn switch Refer to "CHECKING THE SWITCH"CORRECT Replace horn switchINCORRECT
2.Voltage
Connect the pocket tester (DC 20 V) to the horn connector at the horn terminalTester (+) lead Pink lead Tester () lead Frame ground
Turn the main switch to "ON"Push the horn switchCheck for voltage (12 V) on the "Pink" lead at the horn terminalMEETS SPECIFICATION