Having a devil of a time locating a #550 light bulb for the map light of a '73 Eldorado convertible. Looks like a big fuse and apparently isn't made anymore.
If you can't find one, then make one with a LED inside. If I remember rite these bulbs have metal caps on both ends and a glass tube in the middle. I will look and see if I have one,if so you can have it. Ken Perry