I'm wondering if it's feasible to wire a bass with three PU to have all possible combinations of pickups possible. Would it involve kill switches?
In my head I'm thinking a 5 way switch with individual kill switches for each PU and a volume for each pickup with a master tone? Possible or not?
Not only feasible, but it exists. It exists on my three pickup Modulus. It originally only had a on-off switch for each pickup. That wasn't too bad. Gives you neck-sweet spot-bridge in any combination. I tended to use Neck+Bridge or Sweet Spot alone a lot.
Then I got to rewiring my SX Jazz basses. I started to appreciate the tonal shifts you get between series and parallel. So I began to ponder how you could do three pickups. What I wanted was a scheme where the switch for EACH pickup would have three positions. Center would be "off". One way would be series and the other way parallel. So Turning pickups on and off in the "parallel" direction is pretty much what it was before. But now I can flip into "series" mode and it puts any number of pickups into series. You can for example if you flip all 3 into series then all 3 pickups are in series (and are considerable louder than 3 in parallel!) If you flip one of those into parallel it gives you two in series plus the third in parallel and so on for any combinations. These are all Bart soapbars. I posted the diagram in pickups and electronics a while back. I presume the Barts are humbuckers but the coils are as they came from the factory and not split. So each switch is for a relation to OTHER pickups not for the coils in each one.
I did not think that out of phase wiring was anything I'd want. So those options are not available.
If you had MM pickups (I've got some plans here!) You could add a second switch to each pickup like on a G&L L-2000 where you can put the COILS in series/parallel/ single coil! Now that would be some MAJOR mojo in pickup switching! Why we could ALMOST call it a "gamechanger"!
I know what you are going to say: "Well, where is that diagram?"
One moment please: <giant search ensues on the OTHER computer sitting here...>
Try this: [Invalid or Expired Link Removed]
If you want to become "proficient" at this type of modding, figuring this out should help you do it! This is really pretty advanced stuff!
Good Luck!