If you are changing out to LEDs, you might try SuperBrightLeds as a source
They are not going to tell you specifically what replaces what in your RV - you need to figure that out yourself (know what socket you have, etc. ) but prices seem good. Used them to replace my lights in EVC with LEDs.
FYI - They do give very specific info on amperage draw, lumens, and color temperature (K). Do not rely on the description "warm white", "cool white" etc. 3000K or less is usually the temperature that is close to incandescent and easy on the eyes.