I cut the blend knobs wires so it was like it wasn't even there. Then I took the wires and wired it to the switches following the diagrams yougave me and it still killed one pickup signal. Then I too the switch out if the picture. I manually tied the wires together following your "what the pickups would look like in series" diagram and it killed the same pickup signal. So I'm not sure that these pickups in this bass can be wired into series using the traditional diagrams way because my experiment proved that the blend knob and switch are not to blame. AND to help support my idea, the jaguars stock wiring diagram for series parallel doesn't follow your diagram at all. AND it has an actual out in the up position too. I'll get a link of the stock jaguar wiring