In article f5d37609-2b5b-4fd7-b48c-
, says...
also I don't think anyone has mentioned that it is possible to force a
stop/tail bulb in the socket the "wrong" way around - thus making the
larger/brighter brake filament to work as tail light and vice
versa....


Many cars now use a variant which has the pins at 120° instead of 180°.

--
Skipweasel - never knowingly understood.