1004 style interior light bulb.
It is also called a dome light.
They are available at any auto parts store.
Actual voltage is 12.8, which looks a lot like 120.
Retrofit to 12 volt LED bulbs. I bought a 1996 Motorhome with all incandescent bulbs like the one in the picture. What I found that according to my calculations
was that 10 LED bulbs had the same amperage draw as 1 single 12volt incandescent bulb. These LED bulbs are sold on Amazon. https://a.co/d/ilWvaLl
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I think that is a 57 . Replaced mine .
