Ducati Diavel Service Manual: Rectifier-regulator
The rectifier (1) is placed in the electrical components compartment.
The rectifier/regulator consists of an aluminium casing containing the diodes that rectify the current produced by the alternator. It also contains an electronic device that regulates the current supplied by the alternator in accordance with battery voltage.
If the battery is drained, the current has the value necessary to restore optimum operating conditions of the battery. In contrast, if the battery is fully charged, the current value will be lower.
Note
Control the charger current by using the dds diagnosis instrument (sect. 6 - 11, Diagnostic instruments).
Removal of the regulator 
Undo the two fixing screws (1) of the voltage regulator (2) and remove it together with them.
Important
Do not disconnect the battery cables when engine is running because this would cause irreparable damage to the regulator.
Refitting the regulator
Position the regulator (1) on the support.
Tighten the screws (1) to a torque of 10 nm +/- 10% (sect. 3 - 3, Frame torque settings).
Important
Do not disconnect the battery cables when engine is running because this would cause irreparable damage to the regulator.
Regulator fuse
The 30 a fuse is located inside the solenoid starter in the electrical components compartment.
Remove the fuse cap (a) to reach it.
A blown fuse can be identified by breakage of the inner filament (b).
Important
To avoid possible short circuits, replace the fuse in key off condition.
Warning
Never use a fuse with a rating other than the specified value. Failure to observe this rule may damage the electric system or even cause fire.
Alternator
It is equipped with a 12 v, 430 w generator, consisting of a fixed element
(stator, a) located on the generator cover and
of a movable element (rotor, b) fixed to the crankshaft.
Note
To chec ...
Electric starting system
Note
The references of the elements listed below are those of the "wiring
diagram", sect. 6 -1.
Electric starting system
The key components of the electric starting system are a solenoid (6) and ...
Other materials:
Low hands free key (hf) battery level
The activation of this (amber yellow) "warning" indicates that the hands free
system has detected that the battery that
permits the active key (a) to communicate and turn the vehicle on is almost
discharged.
Note
In this case replace as soon as possible the battery as indicated in sect.
6 - ...
The hands free relay
Introduction
This relay provides key on +15 power to all the devices on the motorcycle.
Functionally, it replaces the conventional
ignition switch.
Wiring diagram
The hands free relay receives +12 volt power directly from the battery via
the main 30 a fuse. Hands free - 3: pin 3 on
hand ...
Carrying the maximum load allowed
Your motorcycle is designed for travelling over long
distances with a full load in complete safety.
Even weight distribution is critical to preserving these safety
features and avoiding trouble when performing sudden
manoeuvres or riding on bumpy roads.
Warning
Do not exceed the total permi ...