spark and no spark

By the way exactly what are you using for an extension wire on your meter? You can look up resistance per foot for wire just google it. A multimeter draws "almost nothing" so measuring voltage, almost ANY copper wire should work fine.

Let's say, example, you are using just one conductor in a scrap of CAT-5 ethernet cable, and that it's 24ga copper Let's say this is 20 ft long. One source shows this at .5 ohms. However, again, the meter draws nearly nothing for current.

you can easily check this by simply making a measurement with and without it. Measure the battery directly with the meter leads. Hook up your extension and re-measure at same points. I bet there is no difference in voltage