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MAG · 12-05-2020, 03:53 PM

I think this is what you are seeing:
With the ignition switch closed and the points OPEN you will see "static" voltage (12 volts)at the output of the ceramic resistor. With the ignition switch closed and the points CLOSED you will see 6 volts at the output of the ceramic resistor. A function of current flow.

12-05-2020, 03:53 PM	#2
MAG Senior Member Join Date: May 2010 Location: Austin, Texas Posts: 925	Re: 12 volt system on a Model A I think this is what you are seeing: With the ignition switch closed and the points OPEN you will see "static" voltage (12 volts)at the output of the ceramic resistor. With the ignition switch closed and the points CLOSED you will see 6 volts at the output of the ceramic resistor. A function of current flow. __________________ I noticed the harder I work the luckier I get!