with make/break grounding of the coil neg if it (coil wire) sparks in run and crank that tells you the wiring is good to that point and that the coil is OK (at least cold). then with that hooked back up. dragging the male tip of the body half of the pickup zigzag connector across the intake, if the coil wire sparks in run and crank that tells you the wiring further downstream is OK & the ECU is OK (at least cold). All that is left is the pickup (ohm it, hot and cold) and backing up a bit, the ballast can act up when heated & cause an issue in the "run" tests.