Yamaha DT125RE 2005 Service Manual page 275

2. Bulb socket
• Disconnect the bulb socket leads from the
wire harness.
• Install the bulb to the bulb socket.
• Connect the pocket tester (Ω 100) to the
bulbs terminals.
Positive tester probe
Negative tester probe
Positive tester probe
Negative tester probe
A. Headlight bulb socket
B. "HI BEAM" indicator light bulb socket
• Check the bulb socket for continuity.
• Is the bulb socket OK?
YES
Replace the bulb
socket.
LIGHTING SYSTEM
Yellow lead
Black lead
Green lead
Black lead
NO
8-18
3. "LIGHTS" (Dimmer) switch
• Connect the pocket tester (Ω 100) to the
bulbs terminals.
When turning "LIGHTS" (Dimmer) switch to
"HI".
Positive tester probe
Negative tester probe
When turning "LIGHTS" (Dimmer) switch to
"LO".
Positive tester probe
Negative tester probe
• Turn the "LIGHTS" (Dimmer) switch to the
"HI" and "LO".
• Check the "LIGHTS" (Dimmer) for conti-
nuity.
Switch Good
position condition
"HI"
"LO"
k:Continuity
X: No continuity
• Is the "LIGHTS" (Dimmer) OK?
YES
Replace handlebar
switch (left).
ELEC
Yellow lead
Black lead
Green lead
Black lead
Bad
condition
k k
X
k k
X
NO
X
X