Yes White wires. Its a brand new Delphi unit. Ironically the warrantied new unit had over 5 ohms of resistance I think the part number is #GN10048, could be wrong thats off the top of my head.
Ill check in a bit what test leads touched show.
Thanks for the visual. Now I'm more confused than ever. That is one goofy testing protocol.
Test 1 = Secondary to ground. Valid. Since in this coil, the secondary is connected to the primary, it's
also a test of the primary to ground. And that's valid too. Ideally, there'd be infinite resistance since the primary and secondary winding should be insulated from ground.
Test 3 = Secondary winding resistance. Again, valid. Thousands of ohms due to the large numbers of very fine wire.
Test 2 = Testing from "A" to..."A"? They should be connected internally, thus essentially zero resistance. There's switched-battery power into the coil in one "A", and that same power goes to the module for it's power via the other "A" terminal. This is a sorta-valid test, if the two "A"s aren't connected, the module doesn't get power and the vehicle has no spark. It's also something I've never considered before, never tested before, 'cause I've never seen or heard of a failure here.
The IMPORTANT Test Not Shown = Primary winding resistance. This would be from "A" to "B". Should be very low resistance since there's few turns of relatively large wire. Typically about 0.5 to 0.7 ohms on HEI coils, double or triple on older, ballast-resistor-style ignitions.
The other test not shown = "B" to "B". Just like the "A" to "A" test, it's not something I'd have considered before now. One of the "B" terminals leads to the module, it's how the module grounds the primary windings. The other "B" terminal would connect to the tach, if there is one. If the two "B" terminals aren't connected, the tach doesn't work, or the engine has no spark, so it doesn't run...and the tach doesn't work.
Point is, testing "A" to "B" is enormously more important than "A" to "A", or "B" to "B".
Please link to the web-page that has that diagram. I wanna research this some more.