Ducati SPORT 1000 Manuel D'utilisation page 127

Front turn indicators (fig. 48)
Remove the screw (1) and detach the glass (2) from the
indicator body holder.
The bulb is of the banjo-type: press and rotate
anticlockwise to remove; Fit the spare bulb by pressing
1 2
and turning clockwise until it clicks. Refit the glass.
and tighten the screw (1).
E
fig. 48
52