Whilst I've got her all to bits again, I took a good long look at the electric bits I do have, once again trying to determine if this thing is 12 or 6 volt, and I think I have resolved the mystery.
It looks like at some point the original 70cc engine was replaced lock/stock and barrel with a C70 (step through), looks like they also swapped the loom, hence the loom was cut and hard wired etc.
Another clue was the carb, the float bowl has a tap on the side of it (like the ST and the C50/70 etc), but has been glued in the open position (if anyones got a genuine Chaly carb let me know, otherwise this ones going back in).
So it looks like its the 70cc C70 version with the 6 Volt CDI system, so good news its CDI, unforunetly its 6 Volt, but thats not the end of the world, thats another project in the future.
Today in between showers and a gale, I manged to finish rubbing down the parts for painting, and got them primed
the eagle eyed will notice the lack of rear shocks, the problem is the rear shock covers are plastic (one has split), and the chrome has long gone, so a new pair have been ordered from OOR today.
Meanwhile this arrived today
This must be the VERY LAST (NOS) Honda Chaly rear brake rod left in the world ? (its un available on every site I checked), damn lucky I found it,
BUT as per my un-answered plea for help, I desperately need to know the length of the rear brake pedeal (SOMEONE PLEASEEEEEEEE) from a Chaly and a ST before ordering the wrong part...