Author Topic: Ballast resister  (Read 177 times)

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Offline Al Smith

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Ballast resister
« on: June 30, 2019, 07:04:56 am »
On certain older ignition systems on older stuff they still maintained a 6  volt  coil using a ballast  resister usually rated at 1.6 ohms to drop the voltage to about 6 or 7 volts going to the coil on a 12 volt system .What happens if you don't use a dropping resister is the points flash over causing misfires .
I recently discovered this on my old Ferguson tractor when I installed new points over looking no resister .Just a lapse of memory on my part ,should have known that already .

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