Description

DESCRIPTION

The entire electrical system has been designed and constructed taking into consideration the most advanced standards concerning safety and protection, especially against possibilities of fire.

There are two main types of protection:

• active protection, directed toward "the source" of possible causes of failure
• passive protection, to reduce the effects of any failure to a minimum.

The first type covers a careful design of wiring, with accurate positioning and fastening, attentively defining suitably guarded and protected paths.

To this purpose suitable modifications have been made on the cables of the alternator and motor, applying protection caps, etc.

The passive protections cover all those interventions, which, in fact, have always been applied to the cars, to reduce high failure currents (overload and short circuits).

All the fuses in the system have been dimensioned according to the nominal absorption of the loads that are not used simultaneously, and so as to ensure the intervention in the case of a net short circuit.

All systems and electrical circuits are fed from the battery with a voltage of 12 V.

The battery is recharged when the engine is running, by the alternator (see E5010 -STARTING AND RECHARGING).

The main supply lines are protected by "maxifuses," grouped together in a box near the battery and fed directly from this.

COMPONENTS

COMPONENT LAYOUT

The supplies to all the services and systems are then protected by specific fuses, grouped together in the junction unit, or on the ignition switch power supply: in the engine compartment next to the maxifuses or the e.i.control unit.

Some circuits are supplied continuously, even with the car stationary and the key off, since they are connected directly to the battery

Other circuits are supplied by turning the ignition switch key to the different positions:

• inserting and turning to the first position the key is in RUN position and feeds several circuits, that are, in fact, referred to as "ignition switch power supply" ("INT" and "15/54" lines);
• The second position - START -feeds the starter motor; (line "50")," disconnecting however some circuits (those absorbing greater power) thus ensuring the maximum current flow to the actual motor; (line "INT/A").
• extracting the key, turning it in the reverse direction (and pressing the relevant button) the PARK position is powered, that supplies the side lights even with the key off ("PARK" and "SIDE" lines); (see E2010 - SIDE LIGHTS / NUMBER PLATE).

NOTE: the lines through which the supply is distributed to the various users are indicated on the wiring diagrams relevant to the various circuits. This general wiring diagram indicates all the lines as they are from the battery and maxifuse boxes; see the specific diagrams for further details .