It's only rough, but hopefully this will work as a guide for your braided wiring (viewed from the back).
red = solder point
green = hot core
black = inner insulation
dark grey = outer braid
The braid carries the ground connection from the output jack across the backs of the pots all the way up to the toggle switch. The diagram is configured with independent volumes, like a bass normally is, so when both pickups are on turning down one pickup's volume doesn't affect the other. If you'd rather have it like a guitar with linked volumes (like the GR-1SFdiagram), where in the middle position zero volume on one pup mutes both, then connect the pickup hots (+) to the left lug and the green cores to the middle lug.
Setup a full size cardboard template with accurate positions of the holes and then start wiring it up from there. Remember that you have to feed it all in through one of the cavities, so the wiring needs to be robust enough to withstand it. Connect your pickups last. If you're feeding the harness in through the bridge pup cavity, connect the bridge pickup and then feed the neck pup wire in through its cavity and out through the bridge cavity then connect it. Then feed the harness in, ideally using tubing, and secure it all in place. Don't forget the tailpiece ground wire.
Good luck and ask any questions.
Edit: I should mention that in the above diagram the master tone is on the 'out' side of the master volume, which may not suit everyone. If you'd prefer the modern style with the tone on the 'in' side of the volume then you'll need an alternate diagram.