Guitar wiring diagram with one humbucker, one volume and one tone control. The tone is wired to only one half of the humbucker. Turning the tone will only cut the treble frequencies of the South coil giving the entire pickup a unique and strong single coil/P-90 sound in varying amounts. Don't forget the Wire, Solder, Shielding & Supplies. Copyright© GuitarElectronics.com LLC. Unauthorized use prohibited. Click diagram to view full size.