Youre exactly right about reverse polarity I was ONLY trying to explain to him how the steady state DC current in a series circuit doesnt change if a resistor is located before or after the points... (and besides theres no actual by definition "Resistor" in there anyway, just wire with its small ResistANCE ) I gave him enough info without adding another can of worms to discuss polarity since his post wasnt really about that.
People are free to call coils internally ballasted or Billy Bob ballasted as far as Im concerned, call em what they like lol (As an engineer I prefer to go by trade terms) I just try to explain to lay persons if they disect one of them do NOT expect to find whats defined and normally understood as a stand alone discrete "Resistor" hidden way somewhere, ONLY coils of wire which, not being a prefect conductor, yes contains some degree of resisTANCE
The data Ive seen was the firing voltage required to arc jump current across a plugs gap was a few thoudand higher if the polasrity wasnt correct. Youre right, they still run at wrong coil polarity but the ignition isnt as efficient when its backwards...
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