Well, actually, for a PM setup, I would recommend the Ultimate coil kit Part #14-0915 because it has been tested to produce a spark with a 6 volt lantern battery.
With a PM alternator, you literally start with zero volts at the coil. You are depending on generating enough voltage with a kick to produce a spark. Typically, when you kick a PM bike, you are lucky to get 8 volts on the capacitor, so the ignition has to produce a spark with about 8 volts or less.
The 17-6903 coil produces 75,000 Volts @ 12 volts battery, so it follows that it will produce half of that at 6 volts, which it does.
I would also suggest that you initially start the engine with the PAMCO connected to an external battery that is not connected to the bikes charging system because two things generally happen with a new PM installation:
1. The engine doesn't start.
2. The engine starts and the PM alternator produces 20 + volts and fries all of the electrics, including the PAMCO.
So, start first with the PAMCO not connected to the bikes charging system. This will ensure a start and allow you to check the charging system. I would also recommend that you wear safety goggles because it is possible for the capacitor to explode if the alternator voltage goes too high.
After you have verified that the PM alternator voltage is 14.5 and not higher than 15 Volts, then you can wire the PAMCO into the bikes charging system.
