The Ford Barn

aussie merc · 03-18-2023, 11:50 PM

does anyone know of a 12volt 4 wire heater fan motor seen plenty of 2 wire types but no 4 wire types

Ken/Alabama · 03-19-2023, 07:59 AM

Why not use a voltage reducer with the 6 volt motor ?

mcgarrett · 03-19-2023, 11:57 AM

aussie merc,
As previously mentioned, the voltage reducer might be the first option. The biggest challenge with trying to source a 12 volt fan motor for your heater is the size of the motor itself and how it would mount in the fan housing, the size of the motor shaft being able to accept the fan blades, and the fact that it needs to be able to reverse direction, which accounts for the 4 wires (forward blows heat into the cabin, and reverse blows into the defrost ducts).

V8 Bob · 03-20-2023, 06:38 AM

There are two wire reversing 6/12V motors from NAPA/Balkamp that will fit the early Ford heaters. The shaft may have to be shortened, and a reversing switch will be needed for heat/defrost. I am using one my '40's '41 heater with the reversing switch located on top of the housing. Multiple speeds can be attained using OE resisters.

woodiewagon46 · 03-20-2023, 08:26 AM

I replaced the motor on my '46 Ford with a 12V. one from from Dennis Carpenter, that if I remember had four wires. Part number B6A-18527-B, give them a call.

mcgarrett · 03-20-2023, 09:03 AM

Sponsored Links (Register now to hide all advertisements)

I failed to mention that the real magic happens with the correct 5 position switch -

~ Forward Low
~ Forward High
~ OFF
~ Reverse High
~ Reverse Low

Looks like this:
https://www.pre60s.com/wp-content/up...940-1948-3.jpg

https://i.ebayimg.com/00/s/MTYwMFgxNDQw/z/A80AAOSwQOdfos6O/$_57.JPG?set_id=8800005007

Fortunately, I found one at Hershey Swap Meet last year. Keep an eye on Ebay. They are made by Ark-les and have a resistor made into the rear of the switch to handle current reduction.

mcgarrett · 03-20-2023, 09:06 AM

Trying that second link again:

https://i.ebayimg.com/00/s/MTYwMFgxNDQw/z/A80AAOSwQOdfos6O/$_57.JPG?set_id=8800005007

If you can't click to open, copy and paste into your browser search window.

Bob C · 03-20-2023, 10:26 AM

Auto Zone has the motor for $46 that Dennis Carpenter sell for $120.
https://www.dennis-carpenter.com/en/...b-heater-motor
https://www.autozone.com/cooling-hea...224/686413_0_0

mcgarrett · 03-20-2023, 10:41 AM

Bob C,
That's a great find. If I decided some day to go 12 volt, how would I go about connecting it to my forward/reverse switch? Where does the 5th wire go? I'm somewhat electrically handicapped at times!

kirkf · 03-20-2023, 12:13 PM

I've been looking at this motor, but I haven't tried it yet to see if it can be made to work.

https://www.apartswarehouse.com/Prod...ersable-5-wire

Kirk

woodiewagon46 · 03-20-2023, 05:23 PM

mcgarrett, this is the wiring diagram for the motor I used. Rotation, Hi= orange Lo=Red, CW= Yellow & Green, Black common. CCW= Yellow & Black, Green common. Hope this helps.

mcgarrett · 03-20-2023, 05:28 PM

woodiewagon46,
Very helpful info. So which motor did you end up using/who did you buy it from?
Thanks

aussie merc · 03-25-2023, 05:24 PM

Again thanks all already running 6V reducer just looking at future as want to make a full 12v change , 1/2 and 1/2 is not the most desireable ,12v conversion was done prior to acquiring the vehicle [it works but how it never burnt to the ground gets me ]

03-18-2023, 11:50 PM	#1
aussie merc Senior Member Join Date: Sep 2016 Location: sydney australia Posts: 1,034	39 heater 12v does anyone know of a 12volt 4 wire heater fan motor seen plenty of 2 wire types but no 4 wire types

03-19-2023, 07:59 AM	#2
Ken/Alabama Senior Member Join Date: May 2010 Location: Alabama Posts: 3,261	Re: 39 heater 12v Why not use a voltage reducer with the 6 volt motor ?

03-19-2023, 11:57 AM	#3
mcgarrett Senior Member Join Date: Dec 2013 Location: Waxahachie, Texas Posts: 949	Re: 39 heater 12v aussie merc, As previously mentioned, the voltage reducer might be the first option. The biggest challenge with trying to source a 12 volt fan motor for your heater is the size of the motor itself and how it would mount in the fan housing, the size of the motor shaft being able to accept the fan blades, and the fact that it needs to be able to reverse direction, which accounts for the 4 wires (forward blows heat into the cabin, and reverse blows into the defrost ducts).

03-20-2023, 06:38 AM	#4
V8 Bob Senior Member Join Date: May 2010 Location: Granger (Northern) Indiana Posts: 1,520	Re: 39 heater 12v There are two wire reversing 6/12V motors from NAPA/Balkamp that will fit the early Ford heaters. The shaft may have to be shortened, and a reversing switch will be needed for heat/defrost. I am using one my '40's '41 heater with the reversing switch located on top of the housing. Multiple speeds can be attained using OE resisters.

03-20-2023, 08:26 AM	#5
woodiewagon46 Senior Member Join Date: Jun 2012 Location: Long Island,NY Posts: 1,555	Re: 39 heater 12v I replaced the motor on my '46 Ford with a 12V. one from from Dennis Carpenter, that if I remember had four wires. Part number B6A-18527-B, give them a call.

03-20-2023, 09:03 AM	#6
mcgarrett Senior Member Join Date: Dec 2013 Location: Waxahachie, Texas Posts: 949	Re: 39 heater 12v Sponsored Links (Register now to hide all advertisements) I failed to mention that the real magic happens with the correct 5 position switch - ~ Forward Low ~ Forward High ~ OFF ~ Reverse High ~ Reverse Low Looks like this: https://www.pre60s.com/wp-content/up...940-1948-3.jpg https://i.ebayimg.com/00/s/MTYwMFgxNDQw/z/A80AAOSwQOdfos6O/$_57.JPG?set_id=8800005007 Fortunately, I found one at Hershey Swap Meet last year. Keep an eye on Ebay. They are made by Ark-les and have a resistor made into the rear of the switch to handle current reduction.

03-20-2023, 09:06 AM	#7
mcgarrett Senior Member Join Date: Dec 2013 Location: Waxahachie, Texas Posts: 949	Re: 39 heater 12v Trying that second link again: https://i.ebayimg.com/00/s/MTYwMFgxNDQw/z/A80AAOSwQOdfos6O/$_57.JPG?set_id=8800005007 If you can't click to open, copy and paste into your browser search window.

03-20-2023, 10:26 AM	#8
Bob C Senior Member Join Date: May 2010 Location: So Cal Posts: 8,754	Re: 39 heater 12v Auto Zone has the motor for $46 that Dennis Carpenter sell for $120. https://www.dennis-carpenter.com/en/...b-heater-motor https://www.autozone.com/cooling-hea...224/686413_0_0

03-20-2023, 10:41 AM	#9
mcgarrett Senior Member Join Date: Dec 2013 Location: Waxahachie, Texas Posts: 949	Re: 39 heater 12v Bob C, That's a great find. If I decided some day to go 12 volt, how would I go about connecting it to my forward/reverse switch? Where does the 5th wire go? I'm somewhat electrically handicapped at times!

03-20-2023, 12:13 PM	#10
kirkf Senior Member Join Date: Sep 2016 Location: Manitoba, Canada Posts: 228	Re: 39 heater 12v I've been looking at this motor, but I haven't tried it yet to see if it can be made to work. https://www.apartswarehouse.com/Prod...ersable-5-wire Kirk __________________ 1953 Ford F100 1950 Ford F47 (F1) 1940 Ford Pickup

03-20-2023, 05:23 PM	#11
woodiewagon46 Senior Member Join Date: Jun 2012 Location: Long Island,NY Posts: 1,555	Re: 39 heater 12v mcgarrett, this is the wiring diagram for the motor I used. Rotation, Hi= orange Lo=Red, CW= Yellow & Green, Black common. CCW= Yellow & Black, Green common. Hope this helps.

03-20-2023, 05:28 PM	#12
mcgarrett Senior Member Join Date: Dec 2013 Location: Waxahachie, Texas Posts: 949	Re: 39 heater 12v woodiewagon46, Very helpful info. So which motor did you end up using/who did you buy it from? Thanks

03-25-2023, 05:24 PM	#13
aussie merc Senior Member Join Date: Sep 2016 Location: sydney australia Posts: 1,034	Re: 39 heater 12v Again thanks all already running 6V reducer just looking at future as want to make a full 12v change , 1/2 and 1/2 is not the most desireable ,12v conversion was done prior to acquiring the vehicle [it works but how it never burnt to the ground gets me ]