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Old 09-18-2019, 05:33 AM   #21
JRN1967
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Default Re: points burning out on the Model A distributer

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Originally Posted by Bob Bidonde View Post
My best guess is that the points and or condenser case do not have a low resistance ground path back to the battery. Resistance should be 5 Ohms or less. I use jumpers to get the ground path resistance to 2 Ohms or less.
Thanks Bob, I measured 4.2 ohms when I tested your way.

John,
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Old 09-18-2019, 06:05 AM   #22
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Default Re: points burning out on the Model A distributer

I checked a couple things last night after work. I removed the ground strap and cleaned the connection, and also removed the wires going to the cutout. The connections going to the cutout looked a little bit... Wrong?

The reason I mention the cutout is because I haven't changed the way it was wired since I've owned it. I did convert it to a diode but then just connected it the same way.

On my cutout there were two wires, the hot keyed and the lights going to the left side and the right side was for the horn. Before last night the horn would only work with the engine running. When I connect all three to the left side, the horn works off of the battery.

Here's my question, the way the horn was connected, could this have caused a voltage spike when the horn button was pressed? Just a thought.

John,
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Old 09-18-2019, 10:45 AM   #23
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Default Re: points burning out on the Model A distributer

The wires going to the lights, horn and junction box should the on one side and the generator output on the other.


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Old 09-18-2019, 11:13 AM   #24
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Default Re: points burning out on the Model A distributer

Are there any low cost electronic options for these?
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Old 09-18-2019, 08:41 PM   #25
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Default Re: points burning out on the Model A distributer

http://www.funprojects.com/products/10505r.aspx
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Old 02-08-2020, 07:40 PM   #26
JRN1967
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Default Re: points burning out on the Model A distributer

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Originally Posted by 30 Closed Cab PU View Post
I like what you did, shows you have already taken the initiative and done some research.


Let us know what you find using all of the info in this thread, new and old info.
My solution to the points burning issue I had last Fall.

Turns out it was a loose internal ground inside the generator. I found it when intermittently the voltage would drop to zero on the gauge. This would prompt me to remove the inspection cover on the generator brush cover.

After gaining access to the brushes I found the ground wire going to the brush plate was loose. When I bumped the connector just the slightest bit and the generator would start charging again.

The generator bushings had a lot of play as well so I swapped it out with a spare I had. It's been several hundred miles and the points burn out issue is now solved.

Thank you all for your suggestions.
John

Last edited by JRN1967; 02-09-2020 at 10:41 AM.
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