Ducati Super Sport SS800 Owner's Manual page 54

Reassembly
Insert the locating pegs of the bulb base into their seats to
E
obtain correct alignment.
Hook the clip (2) to the headlamp holders; reconnect the
connector (1) you have detached previously and refit the
rubber cover.
The parking light bulb is fitted on the top section of the
headlamp body. To change it, pull out the bulb holder (3, fig.
56) from headlamp body.
Remove the bulb and fit a new one.
3
fig. 56
54