Ducati Diavel Owner's Manual page 91

Apply slight pressure on the antenna (3, fig. 69) of the printed
E
circuit board until you hear a click.
Align the two shells of the grip and press on the area
indicated by the arrows (fig. 70) to reclose them.
Make sure that you hear a "click" upon closing and that the
key is well closed.
90
3
fig. 69
fig. 70