Electrical; Ignition System; Lighting System; Wiring Circuit - Yamaha SL338D Service Manual

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ELECTRICAL -
Ignition System, Lighting System, Wiring Circuit
CHAPTER 6. ELECTRICAL
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6-1 IGNITION SYSTEM
6-2 LIGHTING SYSTEM
Current for the ign ition system is provided by the magneto
assembly. The magneto assembly consists of the mag-
netized rotating flywheel and the primary source coils
(att ached to the magnet o backi ng p late). The action of the
rotating flywheel generates a low voltage primary current in
the primary source coils. This current is timed, by the
opening and closing of the ign ition points, to pass to the
secondary (high voltage) coi ls at the correct moment. The
secondary coi Is convert the pr imary voltage into high
voltage current and deliver it throug h the high tension leads
to the spark plugs .
Lighting current is generated in a similar manner by the
lighting coil located on the point plate. The lighting system
is of a balanced output type design for the head I ight and
taillight. Overloading of the lighting system by adding on
I ighting equipment is not recommended. Because the
lighti ng sys tem is of a balanced output type, burning out of
either the headlight or taillight can result in a heavy surge
of electricity being forced to the remaining light bulb. The
rem ai ning bulb can also burn out because of this surge.
6-3 WIRING CIRCUIT
Models SW433C, SL338D, SL433B
Stop Sw Br
y
y y
L/W
R/L
L
Gy-0 G-Br
R-Y -L-Br R-G/W-L-Br
OF F
0
x
x x
1
x
0
x
x
2
x
x
0
x
3
x x x
0
' r - - - - - - - - - - G - - - - - - -il. , _ _,,_,
r--------~ 8------~
t - - . . - - - - - - - y
~~
High 12V 60W
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8
Low 12V 60W
::::>-t-- - - -
B .-- 8 ~----++++4f------~
L
L
Stop lamp 12V 23W
Tail lamp
12V SW
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....-r---; - - - -
G Y-c::J- G y
~---0-c:>-
Q---.
R/W
~.-rY_,__
Gy -c::r G
Y---.
G 0
Qc:>Q
R/W
G Gy
y~===~
..---~
0
Right-hand igni tio n coil
Spark plug
Left -hand ignition coil
------L...J
Kil I SW
B
Fig. 6-1
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