Modern Vespa

I know converting AC power to full wave DC has been done many times and is well documented for Stellas as well as the later model PX (with the 5 wire stator) utilizing the TrailTech regulator. In fact i just did the conversion to my 2005 (US model) PX150. It was easy to do, and works great for running a HID or LED headlight.
But now i'm trying to do the same thing to my US market 1980 P200E (7 wire stator, 12V battery, electronic ignition). It's simple enough to float the ground, and attach said wire to one of the yellow TrailTech wires, but then i'm lost after that. Since i have the double yellow wire stator, that means i'll have left over wires, even though i shouldn't.
I found one thread here that discusses the DC conversion using the double yellow wire stator on a p200 engine with points ignition, but it looks like it needs to have the coils rewound. Can i just rewire my 7 wire stator to a 5 wire? Am i better off locating a 5 wire stator then? And does that mean i need to use the 5 wire ignition key switch and wire harness as well then? I have skills to solder and rewire, so that's not a issue.
Floating the ground on p125x

Not to revive an old thread or anything, but just in case someone ends up here from a google search, ill post my findings.

To make your 7 wire stator like the PX200 5 wire stators, youll need to float the ground across the 4 lighting coils and connect them all in series. Below is a diagram I made when I converted my 12/79 P200e to a PX200 stator.

The oem p200e uses yellow-yellow for 2 coils, and black-blue for the other lighting coils. red is the CDI pickup, white is CDI ground, green is CDI charge.

You need to ditch the black wire thats tied to ground, ditch the yellow wire and tie those 2 coils together to series all 4 coils.
NOW you have a yellow wire on the end of the coil chain, and a blue wire at the other end... this is your AC output that goes to the trail tech regulator. Leave the other wires that go to the CDI alone, the PX200 and the p200e work the same in this regard.