Thanks, Joe Elliott -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]
I've got a couple very old (I think) Marchal 5.75in round headlights
which I assumed were less old until I tried to put an H4 bulb in them
and discovered it's too long and has the wrong base. But the lens
has a "CR" marking which should mean it's a dual-beam lamp. R2 bulb,
then? (I don't have any R2 bulbs on hand, nor have I ever seen one
in the flesh.) Second question: the lens makes it look like it
should emit a symmetrical beam pattern, but it has the little arrow
marking indicating that it's a left-traffic (RHD) light, not the
double-headed arrow indicating it can be used anywhere. Can anyone
shed any light on that? Do these old R2 lights with
seemingly-symmetrical lenses somehow emit a handed beam pattern?
