I have an old 12 volt genorator from a sixtys grane truck. I don't know how many amps it puts out. I bought an electric fan wireing kit that has a relay and a thermostat. The thermostat is threaded and I don't know what it is supose to thred into. I'll get it all figured out though. I am thankful that you all are here to ask questions of. That link to the alternator site was very helpful.
Bart