[Masteryota]

All the diagrams I found appear to have AC fired CDI for your engine. Let me give this a whirl. Red/Black wire to CDI power, Blue wire from pulse coil/exciter, Yellow/Black to kill switch, Black/White to ground, and Black to the coil. Unless I am looking at the wrong diagram, and be sure the power comes straight from the stator, before the regulator. Your green wire is the main power wire, that may be why you have 12V there. You should be getting over 20V AC at the CDI power wire, I was getting well over 35V with the pull start.

If the wire colors are different at the CDI plug, then I may have the wrong year diagram.

Many of the guys on the trike site reported much better fuel burn and hotter spark with the GY6 unit installed, I have a feeling the 80's CDI's are feeling their age. Some reported having to rejet a few stages leaner due to adjusting fuel to compensate for weak spark.