Yamaha CS50 User Manual

ELEC
SIGNALING SYSTEM
8-31
3. Voltage
• Connect the pocket tester (DC 20 V) to the
turn signal relay coupler (wire harness side)
as shown.
Positive tester probe

brown 
Negative tester probe

ground
• Set the main switch to “ON”.
• Measure the voltage (DC 12 V) on brown 
at the turn signal relay coupler (wire har-
ness side).
• Is the voltage within specification?
4. Voltage
• Connect the pocket tester (DC 20 V) to the
turn signal relay coupler (wire harness side)
as shown.
Positive tester probe

brown/white 
Negative tester probe

ground
• Set the main switch to “ON”.
• Set the turn signal switch to “L” or “R”.
• Measure the voltage (DC 12 V) on
brown/white  at the turn signal relay cou-
pler (wire harness side).
• Is the voltage within specification?
5. Voltage
• Connect the pocket tester (DC 20 V) to the
turn signal light connector or meter coupler
(wire harness side) as shown.
Turn signal light
Turn signal indicator light
Left turn signal light
Positive tester probe

chocolate 
Negative tester probe

ground
Right turn signal light
Positive tester probe

dark green 
Negative tester probe

ground
-
+
Br
/
W
Br
1
The wiring circuit
from the main
switch to the turn
signal relay coupler
is faulty and must
be repaired.
Br
/
W
Br
1
-
+
The turn signal
relay is faulty and
must be replaced.
LY
Br
Ch Dg
RB
Gy GR
BY Sb G LG
Dg Ch L GR Y Gy
RBrBBYSbG
RY
RYLG
Ch
B
1
2
Dg
YES
NO
YES
NO

Yamaha CS50 Specifications

General

Fuel Capacity	4.5 liters
Fuel System	Carburetor
Cooling	Air-cooled
Transmission	Automatic
Starting System	Kick start
Brakes	Drum brakes (front and rear)