This is so simple to do with an LED and dropping resistor - and it will never burn out - that I'd just visit an electronics part store (or a Radio shack if you have to ) and pick one up. I used all LED's in my annunciator panel, and should never have to worry about replacing them.
Thanks for the reply. I would prefer LEDs since I learned about them a while back and am using them for position lights. However I don't know what I'm doing with them - just need a kit. If I go to Radio Shack, what do I need? A red LED and a certain kind of resistor. Regulator? Any schematics for this?
I like the bayonet holders from RadioShack here with a Super Bright LED, bayonet style here. The bulbs are 12V with a resister built in. You can go to regular bulbs if you want.