See, here'* what I'm talking about. You have to install a couple of ballasts under the hood to start the light, because it won't start by itself. They aren't standard bulbs with filaments; they are a special capsule that forces an electrical arc to jump across two electrodes.
These are the type of lights that you see in the Mark VIII'*, Lexuses, and Mercedes. It'* a high intensity electric white color, with a side-effect of blue or purple.
I'm curious how they look on a Bonneville.
I used to have some PIIA superwhites on my 89 Bonny. The 93 still has stock lights. I've seen the cool blue halogens like some of you other guys have. Those are definitely a step up from the superwhites, and two steps up from the stock lights!