In article ,
T i m wrote:
It sorta suggests it's polarized and if it is I can stick a blocking
diode in there or bridge (single diode less lossy), in case I or
someone connects it up backwards.

If a car bulb, it will already be protected against reverse connection.

--
*When everything's coming your way, you're in the wrong lane *

Dave Plowman London SW
To e-mail, change noise into sound.