what color wires, it's been a long time, i'll help if i can, all your checking is really a coil or 2 coils, it may have a exciter coil, take a ohm meter first and see if you can read between them, let me know the colors it might come back too me, what year atc 70, my son had one from 5 years old till he turned 10, i had every 3-wheeler honda made over the years,