i am not getting any spark out of the high tension cable on the coil, so then with the ignition on, i measured about 12V across the low tension connection and ground on the coil. So it seems like the coil is getting power, but not producing spark. ive done the passive resistance testing on the coil, and it seems to be OK. i would assume its the coil, but i hear from the FAQs and posts that it rarely fails? is there anything else i can look at? am i correct in assuming the powerstage/amp is operational if i read 12V across the coil low tension connection? thanks so much!