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 Wayne Ohlrogge

FIRST BENEFITS - These bulbs are bright, inexpensive, and use significantly less power than the incandescent bulbs they are designed to replace. and the base is not actually attached to the lamp except for the friction pins. If you are using them in an RV you may want to epoxy them to hold them in place. These lamps are smaller in diameter and slightly taller than the original. When visible, these bulbs have a distinctive and different look that may not be for everyone. If you're looking to switch to LEDs, that's pretty much the only option on the market.