GM coilpack - wiring/schematics requested

[jasonsp6]

I wanted to know if anyone on this board has experience or wiring diagrams for the following coilpack.

It is the factory from a Saturn SC1 and from what I found, used on many Saturn and GM model vehicles. There are two wasted-spark coils which mount on top of a exciter unit.
I am trying to find out what the brown/white wire is used for and also to verify the other pinnouts labeled below.




Here is what I learned so far:
<u>Wiring colors:</u>
1. pink +12v power in
2. black/white GND
3. orange coil 1 input
4. brown/white ???
5. white coil 2 input

The respected coil fires when 12v is applied to the "coil input" wire, then released.

Any further info / schematics will be greatly appreciated!

[Mephisto]

its the same coils as ecotec ?

[jasonsp6]

its the same coils as ecotec ?

I just looked up ecotek, and it looks like it is primarily used with individual coil-on-plug coils, instead of wasted spark, like my coil pictured above.

[High Toned Son of a Bitch]

Brown/White is "cyl # 4 signal"

Must be like a crank or cam sensor. Maybe just a reference signal to let the PCM know what #4 is doing. If you used your own crank signal/sensor, you don't need that ignition module. Those coils can be fired by any signal. They look like the same ones on the 2.8, 3.1, 3100, 3400, 3.8, 3800 engines produced by GM. Watch out, those babies put out some fire

You are correct on the others