Open-circuit voltage across the ignitor will be the same as battery voltage. A low tension coil is just a single continuous winding; no magic happens inside. When the points snap open, an instantaneous voltage spike of a couple hundred volts occurs across the ignitor due to "inductive kick". Because of the short duration, the spike isn't measurable with a standard multimeter. It may, however, wreck the meter.Hey guys,
I was wondering what my volt readout should be at the ignitor. I have a 12v 7ah battery with a 12 volt coil.