key on not running draw

With both field wires removed do
an ohm test between the field connections on the alternator.

And do an ohm test between each field contact on the alternator and the body of the alternator, seperately

By the way, if the key is in the run position, and the points (assuming you have points) is closed there will be a draw on the battery. Electronic ignition would also have a draw but probably not as much