Originally Posted by charliemik
BTW, I don't think you can get the GEN light bulb from an auto parts store. Somebody jump in and correct me if I'm wrong but my understanding is that the GEN bulb is of a very specific resistance in order to make the charging system work properly and you need to get the BMW part.
It is just a 12 volt,3 watt bulb.
they are available all over the place.