Believe it or not, try Walmart. I was looking for a LED replacement for a 1076 bulb and found the best price there online. It is a Green Value brand made by Ming's Mark in (of course) China. 8 to 30 volt operating range so it has a regulator in it. The warm white is listed as 3000 - 3500K so a little more toward daylight than an incandescent but still not at all blueish. The two best parts: $4.99 a bulb and free pickup at your local store. I liked it so I just ordered four more to make the trailer completely LED. I'll have to wait and see if they last as long as they are supposed to. Hope this helps.
Ken