Today’s progress, a failure to find anything in the garage to wrap around larger diameter alternator cables where they go through the sealing gland in the alternator case. I know I have something suitable but just cannot remember where I put it.
A small success though with the 2 x alternator cable connectors made from 6mm hexagon brass bar, through drilled 2.5mm to take the cables and 4 x 2.5mm holes drilled on one flat of the hexagon and then tapped 3mm. 3mm x 3mm socket grub screws will clamp the cables to be joined (or separated). The connectors will be staggered, individually heat shrink wrapped and then shrink wrapped as a pair.
