# Two humbuckers with a three-way blade, a push/pull split volume and two tones Canonical page: https://guitarwiring.app/wiring-diagrams/seymour-duncan/two-humbuckers-blade-push-pull-split-volume-two-tones Two humbuckers · Three-way blade · Push/pull volume (splits both) · Two tones Neck and bridge Seymour Duncan humbuckers selected by a three-way blade into one 500k push/pull volume. Each pickup has its own 500k tone with a .047 µF capacitor on the pickup's hot lead before the switch. The volume's push/pull splits both pickups at once by grounding each pickup's red–white link. Drawing: https://guitarwiring.app/wiring-diagrams/seymour-duncan/two-humbuckers-blade-push-pull-split-volume-two-tones.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) - Master volume 500k push/pull: Volume 500k with Split Switch; 500k; compatible example (500k Push-Pull DPDT) - Neck tone 500k: Neck Tone 500k; 500k; compatible example (CTS 500k Audio Pot) - .047 cap (neck): .047 cap (neck tone); 47nF; compatible example (Orange Drop .047µF) - Bridge tone 500k: Bridge Tone 500k; 500k; compatible example (CTS 500k Audio Pot) - .047 cap (bridge): .047 cap (bridge tone); 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 - The source titles the volume's push/pull as a coil split switch that splits both pickups. - Each pickup's red and white leads are soldered together onto a middle lug of the push/pull switch: bridge on the left, neck on the right. - The two push/pull lugs nearest the pot are jumpered together and wired to the volume casing; the two lugs furthest from the pot stay empty. - Each pickup's black lead goes to a lug on its own tone pot, and that lug runs on to a common lug on the blade, so each tone only works on its own pickup. - Each .047 cap sits between its tone's middle lug and that tone's casing. - Three short jumpers join four blade lugs into one output that loops round to the volume's input lug. - The neck green and bare end on the neck tone casing; the bridge green and bare end on the volume casing. - The bridge ground wire ends on the neck tone casing; the jack sleeve ends on the bridge tone casing. - Solder = location for ground (earth) connections. - The source does not number the blade positions; the lugs are mapped by what they do (neck, both, bridge). ## Connections 1. Neck green → Neck tone casing (case, green) 2. Neck bare → Neck tone casing (shield, bare): Drawn grey beside the green. 3. Bridge green → Volume casing (case, green) 4. Bridge bare → Volume casing (shield, bare): Drawn grey beside the green. 5. Push/pull bottom left lug → Volume casing (case, black) 6. Volume right lug → Volume casing (case): Lug bent onto the lower solder spot. 7. Neck .047 cap → Neck tone casing (case, black) 8. Bridge .047 cap → Bridge tone casing (case, black) 9. Neck tone casing → Volume casing (case, black) 10. Bridge ground wire → Neck tone casing (shield, black) 11. Volume casing → Bridge tone casing (case, black): Hops over the two long wires from the bridge cable; they do not connect. 12. Bridge tone casing → Jack sleeve (wire, black): Crosses the tip wire above the jack; they do not connect. 13. Neck tone top lug → Blade top row, first lug (common) (wire, black): The wire loops up over the blade to its top-right lug. 14. Bridge tone top lug → Blade bottom row, fourth lug (common) (wire, black) 15. Blade bottom row, first lug → Blade bottom row, second lug (bridge, black) 16. Blade bottom row, second lug → Blade top row, third lug (bridge, black) 17. Blade top row, third lug → Blade top row, fourth lug (bridge, black) 18. Blade top row, fourth lug → Volume left lug (input) (wire, black): Hops over the wire from the left column's bottom lug; they do not connect. 19. Neck white → Push/pull middle right lug (wire, white) 20. Neck red → Push/pull middle right lug (wire, red): Shares the lug with the neck white lead. 21. Neck black → Neck tone top lug (wire, black) 22. Bridge white → Push/pull middle left lug (wire, white) 23. Bridge red → Push/pull middle left lug (wire, red): Shares the lug with the bridge white lead. 24. Bridge black → Bridge tone top lug (wire, black) 25. Push/pull bottom left lug → Push/pull bottom right lug (bridge, black) 26. Volume middle lug → Jack tip (wire, black): Hops over both long wires from the bridge cable; they do not connect. 27. Neck tone middle lug → Neck .047 cap (wire, black): The cap is drawn on the back of the neck tone. 28. Bridge tone middle lug → Bridge .047 cap (wire, black): The cap is drawn on the back of the bridge tone. ## What each position does - Neck, knob down: full humbucker: Neck pickup (both coils). Source: Only the neck tone acts. - Neck + bridge, knob down: both humbuckers: Neck pickup (both coils) and Bridge pickup (both coils) in parallel. Source: Both tones act, each on its own pickup's lead. - Bridge, knob down: full humbucker: Bridge pickup (both coils). Source: Only the bridge tone acts. - Neck, knob pulled: single coil: Neck pickup (split to one coil). Source: The split switch splits both pickups. - Neck + bridge, knob pulled: both split: Neck pickup (split to one coil) and Bridge pickup (split to one coil) in parallel. Source: The split switch splits both pickups. - Bridge, knob pulled: single coil: Bridge pickup (split to one coil). Source: The split switch splits both pickups. - 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). - The simulator reports one tone control per position; the second tone is wired the same way on the other pickup. ## Check before plugging in - Knob down: in each blade position the meter across the jack reads the selected humbucker, or both in parallel in the middle. - Knob up: each reading drops to roughly one coil's resistance. - Each tone only loads its own pickup's lead. - 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\_1VppSPL\_2T, revision 1. Not the manufacturer's artwork and not endorsed by Seymour Duncan. See also [all wiring diagrams]().