Testing coil, ignition sytem and components?

KnuckleDuster said

According to the second link, the box is ok.

Where do I probe to test the coil while key on and engine off, also with engine running? What readings should I be getting?

Click to expand...

I think you want to test across the negative to positive terminals, then from the center wire terminal to one of the others - I can't remember if it's negative or positive...

That way you can test primary and secondary resistance....