The Ford Barn

RKS.PA · 02-23-2020, 05:55 PM

The original 4 wire heater motor on my '47 Super Deluxe has given up the fight! I've been unsuccessful in finding a replacement from our great sources here on the Barn and on E-bay.

So, I have a 6 volt Unimotor from C&G that is reversible. As was noted here in another recent post, the original motor turned CW for heat and CCW for defrost, controlled by the original heater switch. The original switch has four terminals, one for power from the ignition, and three others to accept 3 of the 4 wires from the original motor....the forth heater wire went to ground.

Is is possible to wire this new Unimotor such that it can run forward or reverse to duplicate the original fan directions?

I'd like to keep the original switch if possible. I've been unable to find anything on line in either a video or wiring diagram to help me along.

Any ideas??

02-23-2020, 05:55 PM	#1
RKS.PA Senior Member Join Date: Jun 2010 Location: Oro Valley, AZ Posts: 1,241	Replacing 6 volt heater motor The original 4 wire heater motor on my '47 Super Deluxe has given up the fight! I've been unsuccessful in finding a replacement from our great sources here on the Barn and on E-bay. So, I have a 6 volt Unimotor from C&G that is reversible. As was noted here in another recent post, the original motor turned CW for heat and CCW for defrost, controlled by the original heater switch. The original switch has four terminals, one for power from the ignition, and three others to accept 3 of the 4 wires from the original motor....the forth heater wire went to ground. Is is possible to wire this new Unimotor such that it can run forward or reverse to duplicate the original fan directions? I'd like to keep the original switch if possible. I've been unable to find anything on line in either a video or wiring diagram to help me along. Any ideas??