I just ordered a bulb for the light above the back door on the inside from www.ledlight.com
. Product code 45543, Festoon Super Flux 2 led light, size "42mm or 1 3/4 in" color "white". I will post when I get it and if it works. If it does, I am going to get a red one and a blue one.
I have ordered my current leds from www.jclampstand.com
I think they might cost more but they have different bulbs. I ordered them for all those swivel lights in the van (and for the porch light even though H2O leaks into it and the LED card said for interior use only).
Product code JC-36-AB-CW (cool white), 36-LED card. 72 lumes and product code JC-36-AB-WW (warm white), 36-led card, 57 lumens. I used strapping tape to hold the LED card in the lights in the van. (See a picture of it with pictures of my SMB) I also got product code JC-19-AB LED bulbs which I, also, am very happy with.