1372 Version

The distribution of the voltage in the vehicle electrical circuit is carried out by means of wiring of a suitable size to support the current absorbed by the relevant consumers, with a suitable safety coefficient oversize.

All the circuits on the vehicle are normally protected by appropriate fuses of a suitable size for the planned loads, located mainly in the junction unit or in other specific housings.

However, certain sections of the electrical equipment, supplied directly by the battery, are not conventionally protected from short circuits: recent experience has shown that there is a risk of the primary circuit cables (usually wide), present above all in the engine compartment and the area of the steering column, causing short circuits capable of producing a fire in the case of an accident or other problems.

1372 Version

To prevent this, on new vehicles, a high amperage fuse (125 A) is fitted between the battery and the connector block, which has the function of protecting the main supply cables from critical short circuits (with high current values).

The cables not protected by the general fuse (cable between fuse and battery, cable between battery and alternator, cable between battery and starter motor) are now the screened type, mechanically and thermally protected from short circuit; in addition the routing of all the main cables has been improved to reduce the risk of damage in the case of an accident, with pre-fixed anchorages and specific connections (for example on the starter motor and alternator) which allow connections with set angles.

Location on vehicle of general system protective fuse