So to close the loop, big thanks to @itu for patiently helping me to get the diagram right, I wired it series parallel in the end, here is the schematic for the interested....
And a massive 👏🏿 To @mybass for sculpting a cracking piece of wood into a gorgeous bass, I feel privileged to have popped together.
Awesome Gotoh resolite GB 350 tuners, Atelier Z pick ups, TI flats.
Sounds very very nice