> Or, the ballast resistor is to lower the voltage across the points
It ensures the correct current flows through the points and coil, a 6v coil
without an external ballast will overheat as well as burning the points.
The voltage across open points is always 12v regardless of whether a 6v coil
with external ballast or a 12v coil with no ballast is being used.
> operation so that they will last longer, the bypass is to get full battery
> voltage across the points
across the coil
> when the starter is being used so that the car
> will start easier. Non ballasted coils have a higher internal secondary
> coil resistance
higher primary resistance. The secondary is the HT.
> so that the external resistor is not needed. Be warned that
> while American cars used bit ceramic insulated resistors many British and
> other cars used a section of resistance wire within the harness so it is
not
> so simple a task to just remove the resistor and use a different type of
> coil.
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