Here is the basic wiring diagram for my guitar, and I would like to know where to cut and solder to add this pickup.

I haven't even gotten the pickups yet, I just want to know what I'm getting myself into before I try to do it.
If your just swapping pickups, unsolder the wire going to the lug the furthest south on each pot. Basically, just follow the wires that come out of your pickups, unsolder those. The ground wire should be soldered to a pot casing, and the other to the lug of a pot.
Agile AL3000
Douglas WRL90
J&D Strat
Squier Tele
Sammick TR2
Douglas Draco
Peavey JSX
Bugera V5
when I take everything out(will be a Pain in my Ass), I guess I'll know, but what is the lug?