Yamaha YW125Y_ Utility Trailer User Manual


 
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ELEC
EAS00787
6. Wiring
8 Check the entire lighting system’s wiring.
Refer to “CIRCUIT DIAGRAM”.
8 Is the lighting system’s wiring properly con-
nected and without defects?
YES NO
Properly connect or
repair the lighting
system’s wiring.
Check the condition of
each of the lighting
system’s circuits.
Refer to “CHECKING
THE LIGHTING SYS-
TEM”.
EAS00788
CHECKING THE LIGHTING SYSTEM
1. The headlight and the high beam indicator
light fail to come on.
1. Headlight bulb and socket
8 Check the headlight bulb and socket for con-
tinuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”
8 Are the headlight bulb and socket OK?
YES NO
2. High beam indicator light bulb and socket
8 Check the high beam indicator light bulb and
socket for continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”
8 Are the high beam indicator light bulb and
socket OK?
YES NO
Replace the headlight
bulb, socket or both.
Replace the high
beam indicator light
bulb , socket or both.
LIGHTING SYSTEM
Replace the headlight
relay.
5. Headlight relay
8 Disconnect the headlight relay coupler from
the wire harness.
8 Connect the pocket tester (Ω × 1) and bat-
tery (12 V) to the headlight relay coupler as
shown.
Positive battery terminal
JJ
JJ
J white/black
11
11
1
Negative battery terminal
JJ
JJ
J brown/blue
22
22
2
Positive tester probe
JJ
JJ
J blue/black
33
33
3
Negative tester probe
JJ
JJ
J brown/blue
44
44
4
8 Does the headlight relay have continuity be-
tween blue/black and brown/blue?
YES NO
1
2
3
4
Br/L
W/B
Br/L
L/B
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