Assuming I had a switch. I have a blend control. I wonder if that will work? I also wonder if I wired the two coils internally out of phase. So many possibilities.If you have a good ol’ fashioned analog multimeter you can always set it to ohms, select a range where the needle sits somewhere in the middle and then tap the pickups lightly with something steel (I often use a cutoff from an E string). The needle will deflect momentarily, just a little bit. If it deflects in opposite directions when you switch pickups, they’re out of phase. If it deflects in the same direction, your problem lies somewhere else; odds are your bass is haunted.
Of course, if you don’t have an analog meter you can always just swap the wires on one pickup and see if it fixes it!
Anyway, I strung it up with a set of light gauge Rotosounds this morning.
The output is a bit low. I'll try raising the pickup height a bit. It sounds best with just the neck pickup. I knew I should have just installed the one. Oh well.
I'm amazed how well the setup is without hardly any adjustments. It's a pretty comfy bass to play as well, despite its hefty 9 pounds.