It would be the Lucas unit for the Tungsten dual filament or duplo bulb,
45/40W, P45t fitting. You can fit adapted H4 halogen bulbs with this
fitting in them but these bulbs are not homologated and thus illegal.
They may give the wrong pattern as the filaments are not in the same
place as in the old type bulbs and cause glare.
However it is wise to fit units that are designed for the proper and
homologated H4 (60/55W) halogen lamps with the P43t fitting as standard
on most cars until about1995 and still used by many today. They give a
much improved vision. They provide a sharp cut off to prevent glare for
oncoming trafic, much better than the later (and much more expensive
lights with H7 bulbs or even more so Xenon gas discharge lights), and
are easier to adjust as well.
Kees Oudesluijs
NL
[demime 1.01d removed an attachment of type text/x-vcard which had a name of
coudesluijs.vcf]
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