sincitylocal
+1y
If you're getting positive at both sides, you have a good coil.
It's because the coil is conducting the positive signal all the way through.
The distributor provides the ground, and at the point spark is needed, the distributor opens the ground, and the coil discharges through the coil wire.
I heard somewhere that the 2200 had a distributor cap change at some point.
One cap is taller than the other, and if the tall one is used where the short one is required, the rotor won't make contact with the button in the cap.