Yamaha TW125 1999 Service Manual page 265

Headlight
Tester positive probe !
Tester negative probe ! black
High beam indicator light
Tester positive probe ! yellow
Tester negative probe ! black
S Set the main switch to "ON".
S Set the light switch to "
S Set the dimmer switch to "
S Measure the voltage (12 V) of yellow (green)
2 on the headlight coupler (headlight side).
S Is the voltage within specification?
YES
This circuit is OK.
EAS00789
2. A meter light fails to come on.
1. Meter light bulb and socket
S Check the meter light bulb and socket for
continuity.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS".
S Are the meter light bulb and socket OK?
YES
yellow or green
1
3
4
5
".
" or " ".
NO
The wiring circuit
from the main switch
to the headlight cou-
pler is faulty and must
be repaired.
NO
Replace the meter
light bulb, socket or
both.
LIGHTING SYSTEM
2. Voltage
S Connect the pocket tester (20 V) to the meter
2
assembly coupler (wire harness side) as
shown.
Tester positive probe ! blue
Tester negative probe ! black
S Set the main switch to "ON".
S Set the light switch to "
S Measure the voltage (12 V) of blue
meter assembly coupler (wire harness side).
S Is the voltage within specification?
This circuit is OK.
7-26
ELEC
1
" or "
YES
The wiring
from the main switch
to the meter assem-
bly coupler is faulty
and must
paired.
2
".
on the
1
NO
circuit
be re-