Section 08
ELECTRICAL
Sub-Section 01
(OVERVIEW)
08-01-1
OVERVIEW
1
717 ENGINE
The electrical system consist of different sub-sys-
tems where some are inter-related.
The magneto is coupled to the engine and produc-
es electrical energy for the ignition system and
the charging system. Its outputs are directed to-
ward the ignition coil as well as the charging sys-
tem and some circuits through the MPEM (Multi-
Purpose Electronic Module).
In the charging system, the battery supplies the
MPEM, the starting system and the accessories.
The following gives an outline of each compo-
nents.
There are different voltage types (A.C. (alternativa
current) and D.C. (direct current)) and voltage lev-
els (0 to 40 000 Vac, 5 Vdc and 12 Vdc). There is
unregulated A.C. from magneto for the charging
system and the ignition system. For the charging
system, the A.C. current is rectified to D.C. and
regulated to 12 Vdc for MPEM, gauges, accesso-
ries and electrical system. The MPEM lowers the
voltage level to 5 Vdc for its internal circuitry and
some external components (neutral switch). For
the ignition system, the A.C. voltage from the
magneto is stepped up to 40 000 V. Keep that in
mind when dealing with voltages in the electrical
system.
MAGNETO SYSTEM
It is the primary source of electrical energy. It
transforms magnetic field into electric current
through generator coil for the ignition system and
through another separate 3-pole generator coil for
the charging system.
1. Ignition system generator coil
2. Magneto flywheel
3. Charging system generator coil
IGNITION SYSTEM
(single generator coil)
IGNITION COIL (with integrated ignition
module)
AND SPARK PLUGS
The ignition coil integrates the electronic circuitry
of the CDI (ignition module). The CDI circuitry re-
ceives its primary electric current from magneto
via 2 wires which charges its capacitor. The CDI
circuitry controls the ignition timing and generates
the spark occurrence by discharging the current
stored in its capacitor to ignition coil.
The primary windings of ignition coil (connected
to CDI circuitry internally) receives the electrical
energy from the CDI circuitry. The ignition coil
jumps this voltage to a high level in secondary
windings to produce a spark at spark plug.
F04H0UA
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2
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Summary of Contents for Challenger 5896
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Page 3: ...219 100 044 0 0 0 1996 Shop Manual 0 R ...
Page 152: ...Section 08 ELECTRICAL Sub Section 03 IGNITION SYSTEM 08 03 2 ELECTRICAL BOX Sportster F04H11S ...
Page 154: ...Section 08 ELECTRICAL Sub Section 03 IGNITION SYSTEM 08 03 4 ELECTRICAL BOX Speedster F04H26S ...
Page 251: ...Section 11 HULL DECK Sub Section 01 COMPONENTS 11 01 5 F04L3IS Loctite 242 ...
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