Review on SRRB Direct 1139/1383 LED Replacement R12 BA15s Bulb 12V/24V AC/DC - Ideal for RV, Camper, Trailer, Motorhome, Marine Boat Reading Light (2W, Warm White) by Matt Jenkins

Nowhere in the photos or in the description have I seen that these are two component bulbs. Basically it's a 2 pin bulb with an adapter. They are also much shorter than my 1383 bulb so they sit very far in the reading light over my RV bed. It is very difficult to catch this small bulb in the socket. It took a few tries because you're basically guiding it with your fingertips and there's nothing to grab or pinch. Also, the color temperature isn't as white as daylight like we'd like. It's listed as 4000k and probably close, just don't expect a bluish white like the picture. This was probably my fault as I should have known you need to be in the 5k range to get this color. They work, so I'm keeping them for now.