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12v Conversation


 
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Yudt06
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Joined: 12 Mar 2017
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PostPosted: Sun Jan 13, 2019 3:50 pm    Post subject: 12v Conversation Reply to specific post Reply with quote

Getting ready to convert my 54 NAA for 6v to 12v. I know they sell kits for this project. I know my lights will need to be updated to 12v but what other parts might I need beside the alternator and wiring ? Do I need a new distributor and such?

Any input or suggestions on what conversation kit to purchase is appreciated
 
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Royse
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Joined: 17 Jan 2011
Posts: 16992
Location: Ionia County Michigan

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PostPosted: Sun Jan 13, 2019 4:02 pm    Post subject: Re: 12v Conversation Reply to specific post Reply with quote

I replace the coil with a true 12V coil, NAPA IC14SB or equivalent.
That way I don't have to wire in a ceramic resistor.
Distributor, points, solenoid, ammeter etc. will all be fine.
 
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Yudt06
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PostPosted: Sun Jan 13, 2019 4:44 pm    Post subject: Re: 12v Conversation Reply to specific post Reply with quote

Perfect thanks!
 
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sunbeam
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PostPosted: Sun Jan 13, 2019 7:16 pm    Post subject: Re: 12v Conversation Reply to specific post Reply with quote

I've always used the resister and the orginal coil less chance or run on from back feed.
 
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Royse
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PostPosted: Sun Jan 13, 2019 7:35 pm    Post subject: Re: 12v Conversation Reply to specific post Reply with quote

I've had feedback keep them running after shutting the key off but
it came from the alternator, not the coil. A lamp or diode fixed that.
 
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rvirgil_KS
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Joined: 07 Jul 2007
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Location: Northwest Kansas

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PostPosted: Mon Jan 14, 2019 8:00 am    Post subject: Re: 12v Conversation Reply to specific post Reply with quote

?I've always used the resister and the orginal coil less chance or run on from back feed.?

Direct 12 volt coil, or 6 volt coil with resistor have nothing to do with run on after shutting key off.

On a Delco 3 wire alternator, #2 edge pin is a sensor terminal to sense battery charge level, #1 pin is an excite terminal to supply start up current to the regulator when engine is started. Once running the alternator internal diode-trio supplies operating power to the regulator.

When the switch it turned off, if there is no isolation between alternator #1 and the switch the diode trio will continue to supply power to the ignition circuit and the engine will continue to run.

An isolating diode, resistor, of lamp will prevent this feed back and engine will shut down.
 
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JMOR
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PostPosted: Mon Jan 14, 2019 2:08 pm    Post subject: Re: 12v Conversation Reply to specific post Reply with quote

well, I guess this is really a conversation!
 
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sunbeam
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PostPosted: Mon Jan 14, 2019 4:12 pm    Post subject: Re: 12v Conversation Reply to specific post Reply with quote

I think the resister works some what like the light bulb not enough power from the exciter curcit to keep the ignition going.
 
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oldtractordude
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PostPosted: Sat Jan 19, 2019 4:42 pm    Post subject: Re: 12v Conversation Reply to specific post Reply with quote

I did the same 3 wire 12 volt alternator conversion , i just used a toggle switch instead of diode or lamp.
 
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