Does anyone have any information on the nature of the blue tubular late style tail light?
All my Japanese references describe this as a glass tube but that seems very fragile for the combat environment. I have seen 'modern' versions with a protective sleeve with a series of slots but I can see no evidence of this on archive pictures. Frustratingly this fitting seems to not survived on any preserved vehicles - does this mean that the tube was some sort of glass and easily damaged?
Any input will be welcome.