I'm wiring a set of Dimarzio humbuckers in series into my guitar.

There is a red wire that is my hot connection
There is a green and bare wire that go to the ground
There is a black/white wire, soldered together ** The wiring diagram that came with the pickups does not show where the black/white wire is connected to. Does anybody know?

References -
3 way Blade switch
1 Vol 1 Tone
Hardtail bridge

Post if you know where the Black and white connection goes, or if you need more information to tell. Thanks