On Wednesday, January 21, 2015 at 10:37:12 AM UTC-8, Spry wrote:
Where can I find LED replacements for standard bayonet and screw in
lamps.

4.8v 0.5a miniature screw (no lens).


That's similar to a 3-battery flashlight, so some commercial items
exist, which contain an electronic controller and LED. The base
will be odd, though, and it's only good for 4.8VDC, not AC.

http://www.tek-tite.com/products.php?cat=9

LED lamps often have built-in lens, there basically ARE no 4pi radiator LED lamps
that are exactly like incandescents.