Ducati MULTISTRADA 1100 S Use And Maintenance Manual page 70

Low beam headlight (top bulb)
Disconnect the wiring connectors (4) from the bulb.
Press then squeeze the ends of the spring (5) to detach
it from the bulb holder (fig. 65).
Lift the spring (5).
Remove the old bulb (6) and fit the new one, taking care not
to touch the glass (fig. 66).
Notes
Be careful to hold the new bulb at the base only.
Never touch the transparent body with your fingers or it
will blacken resulting in reduced bulb brilliancy.
5
4
6
E
fig. 65
fig. 66
69