This might even be clearer since ti does away with complex by-pass caps and vol/tone configs

http://kailuamusicschool.com/guitar-tone-knob-customization-neck-only/


but since you seem unsure and no techs around to help before doing ANY soldering build (or buy) yourself some simple 6 to 12" jumper cables with small alligator clips on each end (you might even have these laying around form other projects?) and hook up how you think it's suppose to go and TEST all pick-up selections work as well as their vol/tone and that piezo vol all works - then mark on paper, THEN solder



https://www.amazon.com/s?k=jumper+wires+with+aligatro+clips&ref=nb_sb_noss

Larry


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