Yamaha YB50 Service Manual page 150

3. Horn
• Disconnect the "Pink" cable from the horn
terminal.
• Connect a bridge cable
minal and earth the bridge cable.
• Place the main switch on "ON".
4. Voltage
• Connect the pocket tester (20 V DC) on the
horn, on the "Pink" terminal.
Cable (+) of tester
Cable (–) of tester
• Place main switch on "ON".
• Check if there is a voltage (12 V) in the
"Pink" cable on the horn terminal.
Adjust the horn.
2.The brake lights do not light.
1.Bulb and bulb holder.
• Check the bulb and bulb holder for conti-
nuity
2.Brake switch
• Disconnect the brake switch cables from
the installation.
• Check the switch component for continuity
between "Brown
on the horn ter-
THE HORN DOES
NOT SOUND.
Pink
Earth of frame
SATISFIES
THE SPECIFIED
VALUE
CONTINUITY
and Green/Yellow ".
SIGNALLING SYSTEM
THE HORN SOUNDS
The horn is in good condition.
OUTSIDE SPECIFIED VALUE
The horn is defective.
NO CONTINUITY
Change the bulb and/or bulb holder.
7-20
ELEC