Just getting familiar with my new to me 1957
overlander (California build). There are three overhead ceiling light fixtures that are about 9 inches in diameter. They are circular and look fluorescent. Don't know I'd the fixtures are original. Should they be 12 volt
or 110 originally? Have not installed 12 volt
battery yet. Also found what looks like a small ground wire poking out of the front belly pan area just behind the hitch? Any ideas?