If you go to (-) ground (with the appropriate alternator and EI unit) for the most effective spark, connect the power wire from the ignition switch to the (+) terminal on the ignition coil.
If going to EI (likely Pertronix) be sure to use a coil with the appropriate primary resistance OR add a ballast resistor as needed.
Follow EI manufacturer's instructions as to what the minimum primary resistance their unit will tolerate.
LOW coil primary resistance GENERALLY = HOTTER spark AND more primary current and (HEATING) of the EI unit and there are limits of what they will tolerate.
Be especially careful not to leave the ignition switch on without the engine running or you may let all the smoke out of the EI unit and possibly the coil.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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