Stock COP polarity

[KooK]

I'm tossing in a set of stock 03-04 Cobra ignition coils on my engine and I was hoping somebody could tell me which side is the 12v power and which side is the ground/trigger?

Thank you!

 

[01yellercobra]

I'd have to look at my harness to tell you, but you don't have to change anything to run the later COPs in your car.

 

[KooK]

Well what the situation is, is that the car is an 00 GT that used to run MS1 before Megasquirt was actually very well known (MS2 basically had no support and was brand new to the market). Anyway, the car now has a setup similar to the 99+ Cobra and I'm using stock COPs for right now. Before this I was running the 96-98 style ignition system on an EDIS-8 so I'm redoing the entire harness from scratch, while I have most of everything that I need, the ignition system is flat out not there for any sort of reference.

From what I can tell, I believe it uses an ignition-on 12v source that is constantly supplying power and the coils ground through the ECU. I assume polarity may play a roll in the coils properly working so I'm asking before I do anything. If any of this information is incorrect then I would really appericiate some insight.

Thank you!

 

[MalcolmV8]

From what I can tell, I believe it uses an ignition-on 12v source that is constantly supplying power and the coils ground through the ECU. I assume polarity may play a roll in the coils properly working so I'm asking before I do anything. If any of this information is incorrect then I would really appericiate some insight.

You are correct. It's a 12 volt source that's hot in key on and crank and the ECU grounds them to make them fire. Positive is always on the right side of the coil.