Ducati MONSTER620 Manuel D'utilisation Et Entretien page 130

Replacing bulbs
Before replacing a burnt-out bulb, make sure that the
new one complies with voltage and wattage as specified
on page 70 - "Electric System".
Headlamp (fig. 50 and 51)
To gain access to headlamp bulbs, slacken the lower
screw (1) holding the rim-reflector assembly to the body
and disconnect the connector (2, fig. 51) from the
headlamp. Release the clip (3, fig. 51) that secures the
bulb and remove it from the socket.
1
3
E
fig. 50
2
fig. 51
53