Measuring from the top of the spark plug wire terminal to the other end of the ground strap should read infinite ohms, not low ohms 2nd thought is your measuring the conductor itself so those reading seem correct
Measuring the center conductor on spiral wound resistor plug wires, not the spiral wire it self , should read more than 300 Ohms, I think
the air gap on the spark plugs is what makes the coil voltage go up so high to jump that gap.