the question was already answered, he wanted to know how to run a cpu fan (normally 12VDC) to a car charger adapter, presumably to run his ventilation on a car battery.
I already told him 18 to 24 gauge would be plenty, and that he could probably use speaker wire or telephone wire.
he then stated that that was what he thought, but he was glad to hear it from someone else... or something to that effect.