# Two humbuckers with a three-way blade and a push/pull tone that splits both Canonical page: https://guitarwiring.app/wiring-diagrams/seymour-duncan/two-humbuckers-three-way-blade-push-pull-tone-coil-split Two humbuckers · Three-way blade · One volume · One push/pull tone (split both) Neck and bridge Seymour Duncan humbuckers on a three-way blade, one 500k volume and one 500k tone with a .047 µF capacitor. The tone's push/pull switch grounds both pickups' red–white links at once, so pulling the knob splits both humbuckers in every blade position. Drawing: https://guitarwiring.app/wiring-diagrams/seymour-duncan/two-humbuckers-three-way-blade-push-pull-tone-coil-split.svg (back of controls) ## Parts and values - Neck pickup: Seymour Duncan Neck Pickup; generic (Humbucker (four-conductor, Seymour Duncan colours)) - Bridge pickup: Seymour Duncan Bridge Pickup; generic (Humbucker (four-conductor, Seymour Duncan colours)) - 3-Way Blade Switch: 3 Way Blade; compatible example (CRL 3-Way Blade) - Volume 500k: Volume 500k; 500k; compatible example (CTS 500k Audio Pot) - Tone 500k (push/pull split): Tone 500k Push/Pull; 500k; compatible example (500k Push-Pull DPDT) - .047 cap: .047 cap (drawn green); 47nF; compatible example (Orange Drop .047µF) - Output Jack: Output Jack; compatible example (Switchcraft \#11) - Bridge Ground Wire: Bridge ground wire; generic (Bridge ground wire) ## Specific to this wiring - Each pickup's red and white leads are soldered together onto a middle lug of the tone's push/pull switch, not taped off: neck on one side, bridge on the other. - The two push/pull lugs in the row nearest the pot are jumpered together and wired to the tone's casing; that is what grounds both coil links when the switch closes. - The blade's output lug goes to the volume's input lug, which also feeds the tone; the volume's middle lug goes to the jack tip. - The grey 'Solder' spots mark the ground (earth) connections; the bridge ground wire goes to the volume casing. - The source does not number the switch positions; the lugs are mapped by what they do (neck, both, bridge). ## Connections 1. Neck green → Volume casing (case, green) 2. Neck bare → Volume casing (shield, bare): Drawn grey, running with the green. 3. Bridge green → Volume casing (case, green) 4. Bridge bare → Volume casing (shield, bare): Drawn grey, running with the green. 5. Volume right lug → Volume casing (case): Lug bent onto the casing. 6. .047 cap → Tone casing (case, black) 7. Volume casing → Tone casing (case, black): Runs down the left side between the two solder spots. 8. Tone casing → Jack sleeve (case, black) 9. Tone casing → Push/pull left lug nearest the pot (case, black) 10. Bridge ground wire → Volume casing (shield, black): 'Bridge ground wire' ends on the volume's solder spot. 11. Neck black → Switch top-right lug (common) (wire, black): Arcs over the top of the page to the switch. 12. Bridge black → Switch bottom-left lug (common) (wire, black): Runs along the bottom, hopping two wires, and up to the switch. 13. Switch top-left lug → Switch second left lug (bridge, black) 14. Switch second left lug → Switch third right lug (bridge, black) 15. Switch third right lug → Switch bottom-right lug (bridge, black) 16. Switch bottom-right lug → Volume left lug (input) (wire, black): Hops two wires on its way to the volume. 17. Neck white → Push/pull left middle lug (wire, white) 18. Neck red → Push/pull left middle lug (wire, red): Shares the lug with the neck white lead. 19. Bridge white → Push/pull right middle lug (wire, white) 20. Bridge red → Push/pull right middle lug (wire, red): Shares the lug with the bridge white lead. 21. Volume middle lug → Jack tip (wire, black) 22. Volume left lug → Tone left lug (wire, black): Straight down to the tone, drawn lugs up. 23. Tone middle lug → .047 cap (wire, black): The cap is drawn on the back of the tone. 24. Push/pull left lug nearest the pot → Push/pull right lug nearest the pot (bridge, black): Short jumper across the row. ## What each position does - Neck, knob down: Neck pickup (both coils). Source: Full neck humbucker. - Neck + bridge, knob down: Neck pickup (both coils) and Bridge pickup (both coils) in parallel. Source: Both full humbuckers in parallel. - Bridge, knob down: Bridge pickup (both coils). Source: Full bridge humbucker. - Neck, knob pulled: split: Neck pickup (split to one coil). Source: Neck coil link grounded: one neck coil. - Neck + bridge, knob pulled: both split: Neck pickup (split to one coil) and Bridge pickup (split to one coil) in parallel. Source: Both coil links grounded: one coil from each pickup in parallel. - Bridge, knob pulled: split: Bridge pickup (split to one coil). Source: Bridge coil link grounded: one bridge coil. - Hum cancelling and phase describe the generic pickup models, not a measurement of any specific Seymour Duncan model. - Pickup resistance is not specified, so no numeric meter readings are given. - The source does not say which knob position splits; this follows the usual push/pull behaviour (pulled joins the middle lugs to the lugs nearest the pot). ## Check before plugging in - Knob down: in each blade position the meter across the jack reads the selected full humbucker, or both in parallel in the middle. - Knob up: each reading drops to roughly one coil's resistance. - With the volume at zero, tip and sleeve should read as a short in every position. ## Source Tinkercaster's own drawing of the Seymour Duncan diagram 2H\_3B\_1V\_1TppSPL, revision 1. Not the manufacturer's artwork and not endorsed by Seymour Duncan. See also [all wiring diagrams]().