All inspection operations of the system involving disconnection of cables (verification of the connections
and devices that are part of the ignition circuit, therefore including the main key switch) must be made
with the engine off: otherwise the control unit could be irreparably damaged.
The ignition circuit works on AC, and obviously,
must be definitely separated from that of DC
In fact the latter, powered by the battery and dy-
namotor, serves only for the service user groups
(city lights, stop, horn, lights, headlight, etc.).
KEY:
1 = Red (direct current)
2 = White (direct current)
3 = Red (direct current)
4 = Purple (alternating current engine stop)
5 = Black (ground)
* = Connection connected to the fuses.
** = Connection connected to the starter relays.
*** = Connection connected to the white-red cable of the light switch.
**** = Connections with electronic ignition.
***** = Connection connected to the voltage regulator.
If there is a connection of two circuits, i.e., if the
ignition one was routed by the DC, there would
be instantaneous deterioration of the control
unit. It is therefore necessary and important
that, in case of removal or disconnection of cables,
particularly of those which depend on the main key
switch and the control unit, during reassembly pay
attention to correctly reconnect each cable to the
corresponding terminal; for this purpose it is al-
ways advisable to consult the electrical circuit
diagrams.
For obvious reasons it is essential that, in case of replacement of one or more devices in the system
(main switch, stator unit of the flywheel, control unit) during reassembly, a device is used that is simi-
lar to the existing one: if in fact similar devices were used, but not specific to the same ignition system,
they would not work, risking irreparable damage to the control unit.
B) INSPECTIONS TO BE PERFORMED IN THE EVENT OF IGNITION IRREGULARITIES
APE TM Benzina General guidelines
GEN - 11
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