D&D Wonderers wrote:
I am looking for small bayonet type led lights. Base about 5/16in diameter.
It looks like you have
BA9S. Click on the BA9S in the list. It's called 9mm British miniature bulb.
Go Ebay, dial keywords - LED SMD BA9S - there should be plenty of them. Specify the socket when ordering - some sellers will supply few pigtails with different sockets, and some will have a LED board with a socket attached to it, so it'd better be the right one.
As mentioned by others, you need to specify watts (or lumens) and color temperature. If your old bulb is a regular incandescent bulb, it would have rating in watts. LEDs are normally rated in Lumens. 1 Watt = 15 Lumen, approximately. If you find a LED rated in Watts, look for rating 5 times lower than in regular old bulb, then it will have same brightness.
Color temperature of incandescent bulb is 2700-3000, called "warm white" or "soft white".