Ooh Rah!
& its Jim.
Update:
1. Installed new Odyssey Battery
2. installed new Regulator wired on its own 30A fuse
3. Installed Eastern Beaver Headlight kit - very nice mod but didn't fix my issue
4. Fixed frayed wire up under the rear fender and retaped and tied up all wires - no change
5. Cleaned and retaped many other misc wires.
I ordered the wireless remote to take the keyswitch out of the equation and will put that in next.
Still reading 10-11V across negative terminal to cable - majority is coming through 10A accessory fuse.
Bike idles much better with fuse #3 removed. The 10A one for Instrument pamel & accessories.
I have no accessories so am thinking about pulling the tachometer apart and see whats going on inside if bypassing the keyswitch doesn't fix this problem.