Join Date: Apr 2010
Ferrari Life Posts: 2,197
Not sure if that circuit is on a relay, or only a fuse. But ensure fuse #12 in the diagram below is OK. It also powers the registration plate lamps and the instrument panel lamps, so if all those are working, the foglamps should be also.
I was going to recommend that you take the fixture apart and clean any corrosion from the lamp & lampholder, but if you're not even getting 12v at the harness connector going to the fixture, then your problem is further upstream.
Relay "P" is described as being for "External Lights", which is just vague enough that it might include foglamps as well, so ensure all your "External Lights" are coming on.
Good luck, & please update the thread to let us know what you find.
'99 550, Rosso Corsa / Nero, S/N:114654, Assy: 31836, Engine: 52084
High mileage, low compression, and missing on a few cylinders.....just like my cars.
Maranello Skunkworks Team Member