If you're reading zero Ohms, try a more sensitive meter. But the amount of energy lost to electric resistance in the spark plugs is not a large burden on the alternator, even with stock wires.
Most larger-diameter plug wires, and all capacitor-equipped spark plugs, belong in the Unicorn Corral. Especially Pulstar plugs, whose claims of scientifically proven fuel economy are based on defective testing in very unrepresentative engine loading conditions.
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