The Ford Barn - View Single Post - After polarity change with 12v conversion the heater becomes an air conditioner

Paul Bennett · 09-21-2018, 12:53 AM

My pending 12v conversion: - bulbs - no problem ... gauges - no problem battery and alternator done and done.

The two external wires for the heater motor dual fan speeds are easily accessed.

Does anyone have a 50 Merc heater motor apart enough to tell me about the motor common wire? I.e. How can I gain access without removing the motor? Please talk to me or provide a photo.

09-21-2018, 12:53 AM	#1
Paul Bennett Senior Member Join Date: Sep 2016 Posts: 628	After polarity change with 12v conversion the heater becomes an air conditioner My pending 12v conversion: - bulbs - no problem ... gauges - no problem battery and alternator done and done. The two external wires for the heater motor dual fan speeds are easily accessed. Does anyone have a 50 Merc heater motor apart enough to tell me about the motor common wire? I.e. How can I gain access without removing the motor? Please talk to me or provide a photo.