12V DC with 120V AC lamp wiring
I'm not a complete idiot when it comes to electricity but I seem to have a mental block on understanding electron flow dating back to my undergraduate P-Chem days when I never did get the hang of balancing chemical equations. Since that time I've rewired houses, an old MGA, etc. and managed to stay alive, but I have a question for someone who understands this area better than me.
I have a couple of old (early 1800s) solid brass kerosene wall lamps which were converted probably about 10 years ago to 120V AC wiring (typical copper stranded wire), have a candelabra bulb base in them and a 5A 120V switch. If I wanted to install these as 12V interior cabin lights, would they work with the small amount of stranded (about 6") internal wiring hooked up to my DC circuit? Would the existing switch work with 12V? I have found 15W 12V candelabra-base bulbs which I could use if this would work.
If these lamps had been left unconverted, they would have been worth BIG BUCKS, but since their bastardization, their value is minimal. Nevertheless, I don't want to attempt tearing them apart to rewire them since they are 1) solid brass and 2) very old.