Rick
Hang on tight, I am sure one of the forum regulars will give you all the info you need soon --- they are probably away from their PCs at the moment.
I think the inside of my headlamp is pretty original, and I will have a look inside tomorrow, although I havnt masterd the art of uploading photos yet
What do you mean by 'correct' Rick ? The original bulb was a 24/24w with a 15mm parallel bayonet fitting but you obviously need one that will fit your bulb holder / reflector and that may not be original.
Do you want an original style large glass envelope to look correct when viewed through a 'Difusa' lens or is that not a consideration ?
Paul Goff sells 6v 24/24w halogen lamps fitted into a 15mm bayonet cap. I'm very pleased with the light that it gives but as a rivet counter myself, I am aware that it doesn't look quite original when viewed through the glass.
I wouldn't fit a 36w unless the dynamo had been replaced with a later long one.
hi this is why i was asking Bulbs: Head lamps 36 watt, 6 volt single contact
Bulbs: Head lamps 36 watt, 6 volt single contact if you copy and paste this will take you to a website its an alladins cave but thy dont do m20 parts cheers rick
hi rik, rick,the reason i asked was because williamsons do a lot of ex wd stuff and i also thought i had read somewhere that wartime m20s didnt need a dipped headlight because a blackout mask was fitted,only trying to share anything useful with the site members cheers rick
Still got some double fillment opposite pins, 6 volt 24watt 24 watt double contact,these bulbs are in original wd packaging, war time dated, some with the crows foot on the glass or brass section, in boxes of six I think, any one interested pp off line , yes I will post a few pics shortly for the rivet counters, when I work out how to do it !! andrew.h.
Strangely, although the dip switch was removed from 1941 onwards, the twin filament bulbs remained in use as a 'spare' Perhaps vibration damage was such a problem that it was necessary.
I'd guess that for those running with a daytime MOT and a mask, a single filament would be useable but presumably the full MOT wants to see dip and main working ?