[PxTx]

I was kinda scratching my head on the rotor with two discharge points too. I remember my Dad ran a 312 with a Paxton in the mid 1960's that he said had twin ignition systems. Turns out it had a Ducoil running 2 coils, which he said seemed to require frequent cap changes due to misfires.

In a similar way to the Mallory Double Life, the Ducoil would alternate the points. Since they used 2 coils, it gave them more saturation time. The key was that you had to reconfigure the plug wires. So if you were running an engine with a 1-8-4-3-6-5-7-2 the new cap configuration would be 1-5-4-2-6-8-7-3. Neither of us knew that off the top of our heads. Needed to to sketch the cap and distributor rotation on paper, so I think it's right.

If I find any old pictures of the 312, I'll be sure to post them.