Re: do i need to wire in series or change phase (pic included)
Sounds like your neck problem is, more tecnically speaking, the polarity (as opposed to phase...got corrected on that a while back) of the pickups; your dimarzio's are gonna have the same polarity, so its just your SD that has an opposite polarity magnet to the others. To remedy that, yep swap the wires. (effectivly gives you RWRP)
As for the jazz pickup getting drowned out, maybe try raising the jazz pickup and lowering the other one? I'd try that before series wiring dual coils...Im a total ignoramous about basses really, but series wiring dual coil pickups sounds analgous to series wiring two humbuckers, and that would just be a mudfest..
Like I say, applying guitar theory here, just swap the wires of your neck pup to put it in phase with the others, and mabe adjust the height of your other two two even the outputs, before trying series wiring.
If you really want to series wire, then basically the hot of one pup needs to be fed into the ground of the other, i.e. the signal flows through one then through the next, then out.
hope this helps!
