Okay, I have this crazy idea that I want to explore, I'm just wondering what "gotchas" I may be missing. I have in my possession three PAIRS of J pups (six singles) that I want to put into a bass along with many ON-ON-ON and ON-ON switches and a pair of 5-way blade switches. The idea is to put them in hum cancelling pairs at the Neck, Mid, and Bridge positions. I'm considering two different wiring configs because of this: 1) Handle each Hum cancelling pair with switches before incorporating them in into the rest of the chain. This means each Pair will have a switch for N/Series (or Parallel)/S selection, feeding into an On/Off switch wired so that if all 3 are "Off" you don't get the dreaded "unplugged" static. Pros: possible to isolate any pickup of pickup combination. Cons: with a DPDT, can only choose 3 of the 4 obvious wiring options. So I can isolate one coil or the other and then do series or parallel, but not all 4. For all the flexibility there would be a lot of options may not be useful in any context or flat-out redundant. Complicated but flexible. 2) Wire three of the pups of the same winding/polarity to each 5-way blade switch so that each blade acts like a Strat blade (sans hum cancelling) and then join there signals to a switch for overall series/parallel between the blades. Pros: MUCH simpler interface. All combinations would be hum cancelling. Cons: Some pickup combinations would not be possible due to limitations of 5-way switch. I would never actually be able to isolate a single pickup coil, there would always be a minimum of 2 (thought theoretically always humcencelling) What could go wrong, right? My first thought is with (1) is to not worry so much about isolating both coils in switching and do <pick a coil>/Series/Parallel switching which may lead to some combinations not hum cancel, but increase tonal options. I'm cutting a custom PG so I'm thinking I may even make a section swappable so that with a little effort I could just swap the section with switches out to experiment with the options. Any thoughts?