Yamaha CS50 Service Manual page 185

• Set the main switch to "ON".
• Start the engine.
• Measure the voltage (DC 12 V) of blue
the position light coupler (positionlight
side).
• Is the voltage within specification?
YES
This circuit is OK.
on
NO
Wiring circuit from
the main switch
to the position light
coupler is faulty
and must be
repaired.
LIGHTING SYSTEM
8-26
ELEC