In article ,
NY wrote:
What was the main reason that cars changed from sealed beam to
replaceable bulb in fixed reflector?

To allow halogen bulbs. Although these days you could have a truly sealed
beam with a halogen capsule.

--
*IF A TURTLE DOESN'T HAVE A SHELL, IS HE HOMELESS OR NAKED?

Dave Plowman London SW
To e-mail, change noise into sound.