Ducati SUPERBIKE 749R 2005 Manuel D'utilisation page 113

Brightness of warning lights
The brightness of warning lights is adjusted automatically
by the instrument panel according to the level of external
light detected.
Display backlight
The instrument panel backlight is switched on only if the
E
parking lights or low/high beam is on.
In this case the instrument panel, using sensors that
measure ambient temperature and light intensity,
automatically turn the backlight on or off.
Automatic headlamp disabling
This function is used to reduce the consumption of battery
power, by automatically switching off the front headlamp.
This device is triggered in two cases:
- in the first case, if the key is turned from OFF to ON
and the engine is not started, the headlamp is switched
off after 60 seconds, and switched on again only at the
next key OFF/ key ON.
- in the second case, after the daily use of the vehicle
with the lights on, if the engine is killed via the RUN-
STOP button on the RH switch. In this case, the
headlamp is switched off 60 seconds after the engine
is switched off, and only switched on again the next
time the engine is started.
20
https://www.motorcycle-manual.com/
Notes
Also during engine start-up, the system turns off the
headlights and only turns them back on again when the
engine has started or when the starter button is released
(2, fig. 21).