I restored my '37 with a new wiring harness, re-silvered the reflectors, etc and found the original lights, as depicted by Dan in the post above, to be fairly bright. As long as you are travelling down a straight road, the light is pretty good. As soon as you turn into a driveway or side street, you are met with absolute darkness.
The beam produced by the original set up does not spread horizontally at all. I believe sealed beam bulbs are better but nowhere near as good as modern systems. If sealed beam were so great, why did Cadillac come up with the side lights that lit up when you used a turn signal?
I would give Dan's suggestion a try and if you are not happy convert to sealed beams. Me? I am sticking with the original system and consider this another example of the "charm" of driving an old truck.
Kent
