Quote:
Originally Posted by Dave1929
I guess the reason for my initial question was why would the coil have voltage constantly. It is just a different setup than all the antique tractors I have worked on. When the ignition switch is off there is no voltage to the coil. I was always under the impression that voltage to the coil constantly would burn it out. I guess I was wrong because the way the A is laid out there is always voltage there.
|
But on a stock A, the circuit is not completed unless the ignition key is on and the points are closed. So no current flows until then, no burnt out coil. The switch is just in the ground leg of the circuit, rather than the hot leg.