Date: 5/7/2020
So, electronics problem. The current system for electronics is, I think (I forgot to test this before removing the engine), a 6 volt AC system. This is why the lights flicker seemly with the revs on the engine. The current coming from the stator on the engine is alternating, not direct. Therefore, when I tried to plug in a 6V battery this morning nothing happened.
After conversion I will be able to supply a content 12V DC current to the onboard system (what is sometimes called the Balance of System) via a 48V/12V DC/DC converter. (I think I will probably plump for this one). I'll probably be rewiring everything anyway, so this won't be an issue - there are not many wires to connect up (headlight, taillight, brake light is basically all you get) so it's not an issue.
The other consideration is that this is the perfect time to put indicators on the thing. BUT - I can't seem to find any indicators that are subtle or hidden or look good. I know the german 150s had big ones on the outside of the saddlebags (I am not sure what they're actually called), but I think they look horrible (see photo)! I think, for the moment, I will leave the indicators off. If I decide that I want them at a later point, I think it might be easy to simply remove the battery and rewire!