Well, i've done most of the stuff for my T-bird and the rest of my parts come next week. I've got my pickups to try out (set of Bart J's, Set of Dimarzio Js and a Dimarzio P).. And now I need to know all of it is going to be wired etc. I have a Aguilar OBP-3 sitting around, but because for the most part Im wanting the most growl I can get out of this bass, I want to have a active/passive switch to truelly go passive when I want to, yet can use the Aguilar when I need to as well (if the aguilar will work with my idea). Now.. Pickup layout is going to be two Jazz pickups in the bridge (like a thumb 5) and a P pickup closer to the neck. I would like to be able to blend between the P and two Js. Then be able to solo each J pup with the option of blending in the P pickup with the two different Js. Is that possible? I was thinking maybe some sort of 3 way switch would work in conjunction with a blend pot where I can have like 1)Bridge J pickup + P, 2) 'Neck' J pickup + P 3) Two Jazz pickups + P. Then whenever the switch is in a certain position, I can just blend between the different pickups. Get me? And if this is possible, is it possible to have all this working in a passive circuit yes? Once I have this down, if I can, i'd then have an Active circuit with the Aguilar. I have a diagram with the aguilar preamp which includes the following: Blend, Volume, Bypass*, Mid, Bass, Treb, Mid Select Switch (goes between 400 and 800, am I right that it doesn't boost these frequences, but selects them to be boost/cut with the mid pot?). *By the looks of it, the bypass switch does what I'm after and bypasses the active circuit (for passive). Can anyone confirm/deny that? So.. Could I use this diagram here, then add in a 3 way switch somewhere before/after the blend control to go between the pickups? If so, how would I wire it up? Thanks heaps!