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Old 07-21-2020, 06:47 PM   #1
Branded
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Default 1940 Alternator Conversion Question

When converting 1940 Sedan to a 1 wire 6 volt positive ground alternator what do you do with the wires at the original regulator. I still want my battery gauge and etc to operate. I understand I will need to run a new heavier wire from battery to the alternator.
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Old 07-21-2020, 07:58 PM   #2
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Default Re: 1940 Alternator Conversion Question

You should be able to still use the "B" terminal on the voltage regulator as a terminal to connect everything to. The other two terminals would not be used (the "F" & "A"). The voltage regulator is not functional, it is just a convenient place to connect the wiring, so the other wires would be disconnected or if you still want the wires on the VR, terminal the other ends of the "F" (Field) & "A" (Armature) wires so there is no possibility of them making contact with anything.

BTW, I'm not a one-wire alternator fan. A lot of people like them, but to me, things just work better keeping it three-wire. And it is not that much different to install, but that is just me.
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Old 07-21-2020, 08:00 PM   #3
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Default Re: 1940 Alternator Conversion Question

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Originally Posted by JSeery View Post
You should be able to still use the "B" terminal on the voltage regulator as a terminal to connect everything to. The other two terminals would not be used (the "F" & "A"). The voltage regulator is not functional, it is just a convenient place to connect the wiring.

BTW, I'm not a one-wire alternator fan. A lot of people like them, but to me, things just work better keeping it three-wire. And it is not that much different to install, but that is just me.
Thanks for the reply, Iím having regulator issues see my other post , hopefully I can get some ideas on where to start.
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Old 07-21-2020, 08:13 PM   #4
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Default Re: 1940 Alternator Conversion Question

When you switch to an alternator (the most common ones) the regulator is internal to the alternator. So, the existing voltage regulator can be removed or used as a terminal to connect the alternator and battery (etc) wires to. But it serves no function other than setting there. I just don't like the way the one-wire alternator function, but like I said, that is just me.
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Old 07-21-2020, 08:35 PM   #5
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Default Re: 1940 Alternator Conversion Question

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Originally Posted by JSeery View Post
When you switch to an alternator (the most common ones) the regulator is internal to the alternator. So, the existing voltage regulator can be removed or used as a terminal to connect the alternator and battery (etc) wires to. But it serves no function other than setting there. I just don't like the way the one-wire alternator function, but like I said, that is just me.
So all I would need is a feed wire to the one wire alternator and terminate the Armature and Field wires that originally connected to the generator.

The original wires could be left connected to the firewall mounted regulator?
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Old 07-21-2020, 08:48 PM   #6
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Default Re: 1940 Alternator Conversion Question

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Yep
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Old 07-21-2020, 09:11 PM   #7
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Default Re: 1940 Alternator Conversion Question

Thanks for letting me pick your brain once again, much appreciated
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Old 07-22-2020, 10:22 PM   #8
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Default Re: 1940 Alternator Conversion Question

Just a suggestion, I took the regulator off and cut all the connecting wires from the battery terminal. Just a feel good thing,maybe over going. Al
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