Love the switching experimentationsDid a big electronics upgrade to my NG2 that was almost completely successful.
I've been running FDV pickups in this bass for about 6 months now, and almost always run it in passive mode. I thought a Glockenklang preamp would be better, as it should be more transparent than the Tone Capsule, and I gain a tone control in passive.
Along with this, I added a third FDV. The Kyle Konkiel Signature inspired me to use the (now useless) switch for additional pickup options. So I kept the middle and bridge connected to the 2x switcher, and wired in the neck pickup through a 3 way switch to get more options: neck only, 2x only, and both in parallel.
Got it all done last night, and it works 100% in passive mode with no batteries. Plenty of great options, I especially like being able to easily switch between neck and middle/bridge in series (and neck in parallel with middle/bridge in series is great).
If I put batteries in, I get a bit of crackling in passive mode, and a lot of loud crackling in active. I reached the limit of my troubleshooting skills, so will need to find someone that can fix this for me (or determine that the preamp is faulty, which is always a possibility).
But still happy with the result, it went smoother than I expected (other than the hours of troubleshooting afterwards). Hopefully I can get it fully functional soon.

You could start a thread over at the Pickups & Electronics section.
A quick diagram of the new wiring, explaining the changes you've made, would help
