I have a request....is there a way to wire a 5 way rotary (PCB) with a Tremonti in the bridge and a Vintage Bass in the neck and each pickup having a separate volume? Assuming the tone pot would become a volume for the Vintage Bass.
Definitely. Hot wire from each pickup goes to its respective volume first (just like a Tremonti) and then out to the corresponding lug on the rotary. Then, the hot wire out from the rotary (that would usually go to the master volume on a Custom) goes straight to the jack.
The only question mark I have is pickup polarity. It might take a little testing/tweaking to make sure you're in phase and getting the desired coil combinations.