need some fan info please

MIKERP76 said
The previous owner wired it to the voltage regulator wire coming from the key. i have tried to re wire it to the battery it self with a thermostatically operated fan controller. but it still seems to drain down the battery while driving with the radio on.

It sounds to me like someone either did something that is limiting the alternator output, or there is something wrong with the alternator or it's associated wiring.

Have you checked the voltage at the batter with the car running and the fan both connected and disconnected?
Should be around 13.8 to 14.8 volts with the fan not running, and I'd be curious to what it is with it running.