What kinds meter are you using? just curious
If the battery has been on a charger then turn it on and start it a couple or leave the lights on for 3-4min.
See what voltage reading you get.
1 Battery voltage not running
2 Battery voltage with bike idling
3 Battery voltage with bike at high idle

Opps Have you done anything to address the 14.7 v you mentioned a few posts back
I'll catch up in min. dang it

WP

 

It's just a cheap multimeter, only trickle charge in the winter,I thought 14.7 volts would be normal after a start up to replenish the battery.

 

The point with the 14.7 v is that is to much voltage.
It can hurt the battery along with a possibility of helping create your problem you mentioned in the 1st post.

Voltage at 2k rpm should be NO More than 14.2.
I know it doesn't like much but it is.
This is the point of having / access to a good meter to get accurate readings

WP

 

So today I decided to screw around and disconnected the regulator plug and ground, unbolted it and let it hang.
Started the bike and I still get the tach bounce and the headlight flickering, so now I'm thinking it has nothing to do with the stator or regulator.
Leaning towards the Dyna S ignition or the coil that came with it, maybe something in between like a breaker. I don't know...

 

I would tend to think that it's something to do with a poor connection. I believe that all the power to the bike is routed through the ignition switch. I would look at the connections there.. A DWG has the switch on the dash, they can become waterlogged.. I'd check the switch and the wire connectors to the switch.

 

Can you post a video of it happening?

 

Does the ignition have it's own feed separate from the lighting? Another thing I would do is disconnect your headlight and see if your tach keeps jumping or fluttering however you put it.. You got to remember that an LED headlight is a diode and they flicker when on and they're not like constantly on like an incandescent or a fluorescent.. That could be the whole cause of your problem with your tach even, this is what I'm getting at..

 

Yes I will try to post one soon....

 

Here is basically the longest video I can send

 

I think from that video is that it is an idle issue not a charging issue???? Bump up the idle a bit. That Tach may be a little ptimistic.