I have heater assembly from 1949 has 6 volt blower that works and water flow control valve. Are you still looking. Contact me
Interesting timing on this~ I am looking into getting my fresh air heater working on 12 volts. I don't find a thing about it in my maintenance manual, however. I need to find an exploded view of one to see if you can take the motor out through the firewall.
I have a complete heater system , heater core has been tested and its good . if you haven't already have one get back with me