Voltage Reducer for 48 heater

4

48fordconv

Senior Member
I'm converting my 48 Ford to 12 volt. I found a reducer BWD VR1. It says it will handle up to 4 AMP. Is that large enough to run heater motor on high. Thanks
 
You probably want to run two of those in series. I tested my heater at 6.5 amps and two ve-1's will handle 8 amps. Pretty sure it's series, not parallel , but I can check when I get home.
 
Hi there, Its parallel to spread the load. Series would double the resistance value and slow down the heater motor to a crawl. Maybe better off with a 6 amp capacity resistor from MACS, part #32-62259-3. You should really test the current draw of your heater motor so you can work out which resistor to buy. Regards, Kevin.
 
Steve-Maine said:
I'm converting my 48 Ford to 12 volt. I found a reducer BWD VR1. It says it will handle up to 4 AMP. Is that large enough to run heater motor on high. Thanks
Click to expand...
Been running my 6 volt heater motor on 12 volts for a number of years.
It just runs faster, the same as the 6 volt starter motor.
 
Hi Steve. I have a 6 volt heater in my 40 with 12 volt system, been in there over 40 years, I got a 12 to 6 volt resister I think from Napa years ago mounted under the dash, then the wire goes to an old heater switch that has knob with a bulb in it and the switch has 3 speeds. Worked fine for years. Walt
 
Just checked my directions, I was wrong, it is parallel as Koates says, series would drop it down to 2 amps.
 
very simple, go to a junk yard or auto parts store, Get Blower resister for a GM heater blower. It should have 3 or so coils of resisters on it. Apply 12 volts to the power side, read the output with a volt meter until you get 6 volts or close to it. Cut a hole in the bottom of your heater where the fan will blow on it to keep the resister cool. I found a tap with 7 Volts out put, used it on my 1951 F-1 for about 15 years.
 
TO RALPH M,
thanks for info. We were in North Pole, Alaska a couple of years ago. I believe that is where we went into a room that was -40 degrees with just tee shirts on. Kind of cold compared to Maine.
Steve
 
You must log in or register to reply here.
Back
Top