On Wed, 14 Oct 2020 16:12:36 +0100, "Dave Plowman (News)"
wrote:

snip

Well, as I've replied to Paul since, I had a 'what if' along those
lines and assuming the pin spacing / orientation is 'stock'. for
something more common, I could re-wire it so that the base is earth
and then could feed the two filaments as you might with a stop / tail.

Assuming the holder makes it possible to wire to the base. It could be
plastic (or a brass sleeve in plastic)

No, it's very (in comparison with most car lamp holders) substantial
metal Dave:

https://ibb.co/gw6wHjM

So it's just a matter or finding a suitable (LEDS facing straight out
and sideways) LED lamp and giving it a go.

Most car replacements are like that, as the original tungsten made use of
a crude reflector.

I have seen some that seem to just face back but unless the LED's were
*very* wide angle, it might work more like a spotlight.

Would you think running stop / rail together would impact the life
span much Dave?

Interesting point. Things like rear fogs can use a 19 watt SBC, and they
could be on for quite a time, rather than stop lights, etc.

Ah, good point.

You'd expect a
tail light to have a good life.

Agreed ... just that there seem to be LED lights and LED lights ...

Cheers, T i m