David G said: (quoted from post at 20:51:36 05/26/15) I do not know of a coil with an operating voltage less than 6V. The ballast resistor is typically for 12V systems, it allows the use of a 6V coil during normal operation, and 12V for starting.
I think you are out of luck with the 6V and a ballast resistor.
Convert to 12V, you will never regret it.
David, the Ford N series tractors with the square can coil:
So now you've seen a 6 volt coil that used a resistor.
Now as for cars most later cars in the 60's and 70's used a coil that used about 8 volts, not 6. So you still had to use a resistor of some type to reduce voltage to the coil. You will note that you have still today 6 volt round can coils, "12 volt" use with a resistor (8 volt) and 12 volt no external resistor required.
Rick
This post was edited by oldtanker at 21:12:44 05/26/15.
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