I hope my usual guitar tech is available again soon.
Yeah, I wouldn't use the guy who soldered this Warpig in again. Seems like the dude lacks some basic common sense. Why he would untape the green and white and solder the white to the pot is anyone's guess. Black is almost always ground (Seymour Duncans for example have a black ground wire), even if hot is sometimes white. In any case (1) he didn't bother to check out the wiring diagram & (2) didn't test it before giving it back to you. But really if I looked at a four-conductor pickup and saw two of them taped together I'd figure they were the 'optional' ones.
