jpv

The way I've understood it:Nav lights - on during night, off during day since you can't really see them (at least not as well as in FS).Red beacon - on when about to move on the ground or start engines, off when on blocks and engines stopped.Strobes - on when entering runway, off when leaving runway. In smaller planes off in clouds so the reflections won't blind you.Taxi lights - on when taxiing at night. Off before turning to gate so you don't blind the ground crew.Landing lights - on when entering runway, off when above 10000 ft, on when below 10000 ft, off exiting runway.Logo lights - switched on on the ground during night so the guy in the tower can recognize your aircraft, in the air increases your visiblity in terminal areas.

They might be tied to the tailhook command, as in some aircraft with extending landing lights. You'll need to set a key for that in the options.

Hyv

Benoit Gaurant has a very nice and realistic panel for the Caravelle, available right here at avsim library. Works also in FS2004. As visual model I use Mike Stones Caravelle.