Posted by JMOR on July 16, 2021 at 07:22:06 from (76.187.207.141):
In Reply to: Electrical help posted by grandpa Love on July 15, 2021 at 19:06:57:
Quoting Removed, click Modern View to seeWell, grandpa, my heart goes out to you, because if you came here confused, you will go away either more confused or feeling insane, as there is a lot of bogus/conflicting stuff/opinions expressed here. I need to write a book to address each one & do not intend to. I will try to help a little.
1) that meter is useless to use in measurinf 1.5 or 3 ohms. Reason: loweat scale is X10....that means that the 1 on right side of Ohms scale is 10 Ohms, thus each little hash mark between 0 and 1 represents 2 Ohms. So, you might guess that a needle pointing somewhere between 0 and the first little hash mark is somewhere around 1 Ohm. Now it is highly likely that the meter and leads, connections, etc. will render even that guess less that close. Document says +/-5% accuracy. IF that is 5% of full scale, that means +/- 0.05 X 20,000= +/- 1000 Ohms. If it means 5% of any reading, then 5% of 1 Ohm is real precision (don't expect that. It may mean 'as a percent of the swing of the arc'? If all the stars align correctly, you might determine a 1.5 vs 3 Ohm coil in a side by side comparison in that the larger will move the pointer twice as much as the smaller one. That is probably the best you can hope for.
You idea of the voltage on connection between coil and distributor is wrong. You will not see 6v there (on 12v system) ever. You will see 12v when points open and Zero volts when pints closed. Hope a little bit helpful.
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