agualar has an onboard preamp that lalkand uses, for about 200.00 you can get it pre wired, but you might have to route another hole in the back of your bass for another batt.
I just got the stack knob setup from fender, the kit has everything in it, only I cant make heads or tails of the diagram. It looks like wires soldered in 2 places. is there a better wiring diagram out there, :confused: