Replaced ballast resistor started ran and died
oops my bad 0.5 or 0.6 with points but the factory manuals quote this at 70-75 F and NIL AMPS flowing which makes no sense to me
well 3-4 amps flow and it get way hotter than 75F so its resistance increases
coil sees 8 to 9 volts in operation, that means ballast sees 3-4 with approx 14 volts across the system due to the alternator being ON.
so the coil provides 2/3rd of the resistance and the ballast 1/3
its a low primary resistance coil
say 1 ohm
that tallys with a ballast of say 0.5
1.5 ohm resistance in this situation would mean 9.5 amps flowing .... Bye Bye points
3 ohm total gives 4.6 amps flowing add in impeadence due to switching the coil off and on and you would be closer to the 3-4 amps specified as ok for the points
my only issue is i can't find the primary resistanace of the 8 volt coil
anyway comes down to how you specify the resistance of the ballast
but yes I agree i was wrong above on my 1.5 ohm suggestion
Dave