do I just need a inverter to match the amperage or will the same wattage but lower amperage work, just not spin it as fast? I'd like to be able to right a fan control into it and a safety so that when the door opens the fan stops.
"Inverter"? It wants to be wired to a 115VAC source - like from a USA wall socket. If you want you could wire the black (hot) wire through a dimmer switch to have some control over the speed.
Fans were from the original components of the freezer, seems they all failed..... original connectors were black I thought they may be able to be salvaged... but nope!
off to get one of those small personal desk fans for $5 from walmart or perhaps a computer fan from altex