Join Date: Jul 2007
Location: New Zealand
The sidelights are in with the high-beam headlights, so I presume we're talking about the round cover and not the separate bulb holder for the indicator light (that indicator bulb holder can be really difficult to get out).
The cover should lift off once it has turned about ten degrees, so I think you're there.
Apply some silicone grease to the rubber seal to make it easier to refit/remove in the future. Silicone grease is handy stuff for preventing all types of squeaks and creaks, is safe on plastics, and is longer-lasting than silicone spray. Can be difficult to find; try an engineering trade suppliers rather than the usual retail shops open to the public.
'00 GTV V6, '08 FIAT 500, shell and parts for a '71 FIAT 850 Coupe