Yamaha 5KM2-AE1 Service Manual page 410

4.Voltage
Connect the pocket tester (DC 20 V) to the
G
horn connector at the horn terminal.
Tester (+) lead → Black lead 1
Tester (–) lead → Frame ground
Turn the main switch to "ON".
G
Push the horn switch.
G
Check for voltage (12 V) on the "Black"
G
lead at the horn terminal.
Adjust or replace horn.
*
MEETS
SPECIFICATION
SIGNAL SYSTEM
OUT OF SPECIFICATION
Replace horn.
9 - 45
– +
ELEC