The VMC VF56 uses a 7-10watt 120 volt candelabra-base Incandescent lamp in the bottle-door area if it's equipped with one, many weren't. ( an example of one that wouldn't have a bottle door light is the "thrift-vend" model it also had a painted steel sign instead of a light-up marquee).
FYI...one explanation given for how the florescence lamps ballast works is in error, it doesn't utilize any "chemical reaction", it is merely regulates the current through the lamps vacuum tube after the filaments vaporizes/ionizes the mercury inside to lamp to allow it to "strike an arc" ( which is an electrical short as far as the system voltage & current is concerned) so then the ballast "throttles" the Arc's current so it doesn't blow the tube to shards of glass or tip a circuit-breaker of fuse. Once the mercury is a glowing plasma, it produces ultra-violet light which is converted to visible white-light by the phosphor coating inside the lamps glass envelope. (IE:tube) nothing chemically changes inside the lamp. Nothing like a little lightning in a bottle to brighten your day. (esoteric isn't it?)