Guitar wiring diagram with one humbucker and one volume and push pull switch for series and parallel mode. With the switch down the humbucker is in series mode (full power & tone) With the switch up, the pickup is in parallel humbucker mode (clean/sparkle tone). Ready to start? Don't forget the Wire, Solder, Shielding & Supplies. Copyright© GuitarElectronics.com LLC. Unauthorized use prohibited. Click diagram to view full size.