[NathanUK]

Originally Posted by 930 porsche

Nathan,

I ask my mechanic and he cannot remember which wire he hooked up the BLK/PUR with. That is why I am educating myself to do all of these things myself and I appreciate your time and effort of explaining the process. I am starting to get it. It is just the verbage that I am trying to understand. I do not want to depend on my mechanic like all of you guys.
I agree, most of the so called P-car specialists don't know as much as all the people on these boards. Two heads are better than one as they say.

If I understood correctly the primary is the CDI harness connector end? Yes And the secondary is the + and - on the coil? No
To check the primary of the coil you don't actually need to unplug the coil itself (just remove the HT lead), because if you unplug the connector at the CDI you can then check the coil AND the wires connecting the coil to the CDI all in one operation.

The secondary is when you check one of the terminals you tested above (doesn't matter which) but this time place your other meter probe where the HT lead plugs in.

Which one is the coax that you mentioned to test with the green wire?
If you look a the pics of my CDI harness connector it is the green wire and then the black one below it. The black one is the shield so it is wrapped black to protect it.

When I test on the CDI harness connector, on the brown and white I get fluctuation between 1.2 to 5 to 140. Is this normal?
Is this with the connector unplugged from the CDI? If so then mine read 0.7 ohms. If yours does not read this then maybe someone else wouldn't mind taking a reading for us?

On my CDI harness connector I have 2 BLK/PUR wire from the exact same location, 1 is connected and the other one cut with bare wire showing.
Not sure why yours is like that, get the bare one taped up ASAP and only take your readings from the connector itself..

Answers in red.