Guys, I need to ask for your help again.

So I decided to get a pair of vintage Humbuckers for this build (Les Paul style single cut kit). I don't know much about them, but they have more cables than the wiring diagram...

I'm trying to stick to this diagram:
https://www.pitbullguitars.com/wp-co...m4Pot%20v5.pdf

And so far, it looks like this:

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But what am I supposed to do here? I guess red is hot and I can follow the diagram. But is the white cable ground or the drilled copper cables? What should I do with the one that is neither hot nor ground?

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Sorry for my dumb questions but I rather ask instead of accidentally build a bomb or something ;-)