Hey Bill, the battery is under the seat still but I did indeed replace it with lithium ion anti gravity as it was the only way to accommodate such a design. No worries on the wiring, all done properly, new automotive water proof connectors for anything new, proper soldering and shrink tubeing on anything existing. All done under the tutelage of a mechanic of 30 years. The bikes built to be every bit as reliable as they were from the start in this regard. Main fuse block is just ahead of the seat mounted on its inner square tube frame, needed space to allow no issues with heat on the R/R.
It's perfectly comfortable for the riding I do with it, the Ducati pillion is more comfortable then the original k1 seat so i find I don't mind the slightly higher seat angle. I find I ride a couple hours before it's time to make a stop and have a coffee or such.
The project was one of form with minor exceptions made to comfort from the start. Something of an exercise in what I could build with it. It may be mildly less comfortable then it started but it's a riot to ride around on. I'm working on a 1979 cb750 now that will be a machine more meant for long touring and comfort.