bulbs on alfas are a flipping nightmare.
1. They blow regularly.
2. They are impossible to get at to change
3. It's hard to figure out when they have gone unless you know where they are looking.
To check the front light clusters:
1. make sure you have the front fogs turned OFF, because otherwise you were confuse yourself when you are trying to figure out which bulbs are working and which aren't.
2. Turn the light switch on the stalk to the FIRST position. Get out and look, there should be dim light coming front two tiny bulbs you can barely see (these are the sidelights)
3. Turn the light swithc on the stalk to the SECOND position. Get out and look, there shoudl be two bright beams pointing at you. (Dipped beam)
4. Keep the light switch on the stalk at the SECOND position and PUSH the stalk forward. Get out and look - you should now have two very bright beams. (main beam)
5. Go back to SECOND position setting and press the front fog button on the dash. Now check - the two outermost lights in the cluster shoudl be lit...these are the front fogs.
The mechanisim for changing the bulbs on alfas was designed by the devil himself. The access is appauling. The dipped bean (And I think the main beam too) are held in place by a loop of wire which is hinged at the bottom. It will cut your fingers to ribbons trying to unhook it. The basic principle is to squeeze the sides in. I take a paper clip and make it into a hook shape, and hook it around the top of the wire and then tug with as much force as you can muster.
The sidelights are hidden even more obscurely on these little bits of plastic. You have to reach around inside till you feel a little piece of flat plastic jutting out and pull on it till the hole thing comes out in your hand, attached to the wire, then unscrew the bulb from it's mounting.
then stick the whole lot back in...and prepare to do it all again in about two weeks time when the next bulb blows!