Ducati superbike 899 panigale Owner's Manual page 231

Headlight
Gain access to the left bulb.
Turn the ring nut on upper bulb holder
counterclockwise and remove the burnt-out bulb.
Replace the bulb with an identical one. Turn the ring
nut clockwise to lock.
Gain access to the right bulb and replace it using the
same procedure described for the left bulb.
Important
To change headlight bulbs, it is not necessary to
disconnect main wiring harness cable from headlight
body.
Note
Do not touch the transparent part of the new
bulb with the hands. This would cause it to blacken
thereby reducing bulb brilliancy.
Attention
The headlight might fog up if the vehicle is used
under the rain or after washing. Switch headlight on
for a short time to dry up any condensate.
Replacing the parking light bulb
LED parking lights are maintenance-free.
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