I've had a set of Accel ignition coils for a few years, and only used them for a few weeks when I first got them. I tested them. The secondaries seem fine. The primaries are all ~1.12 ohms. My FSM says less than an ohm is normal.

I took these off because I got rather severe predetonation at high revs. So much the engine would sometimes die. They may be fine in cooler NA engines.

I know of only 3 members that bought Accel coils (mainly because they wanted the yellow), and all 3 had problems.