# Two humbuckers, three-way toggle, push/pull series/parallel and phase volumes, push/pull split tone Canonical page: https://guitarwiring.app/wiring-diagrams/seymour-duncan/two-humbuckers-toggle-push-pull-series-parallel-and-phase-volumes-push-pull-split-tone Two humbuckers · Three-way toggle · 500k push/pull neck volume (series/parallel) · 500k push/pull bridge volume (phase) · 500k push/pull master tone (coil split) Neck and bridge Seymour Duncan humbuckers, each with its own 500k push/pull volume, into a three-way toggle, with a 500k push/pull master tone and a .047 cap on the output. Pulling the neck volume puts the two pickups in series, pulling the bridge volume reverses the bridge pickup's phase, and pulling the tone splits both humbuckers. Two casing ground wires the sheet leaves out are added so the circuit works. Drawing: https://guitarwiring.app/wiring-diagrams/seymour-duncan/two-humbuckers-toggle-push-pull-series-parallel-and-phase-volumes-push-pull-split-tone.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 toggle: 3 way toggle (unlabelled); compatible example (Switchcraft 3-Way Toggle) - Neck volume 500k push/pull (series/parallel): Neck Volume 500k series/parallel; 500k; compatible example (500k Push-Pull DPDT) - Bridge volume 500k push/pull (phase): Bridge Volume 500k phase; 500k; compatible example (500k Push-Pull DPDT) - Master tone 500k push/pull (coil split): Master 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 - Departure from the printed sheet: this diagram adds two ground wires that the sheet does not draw. (1) Master tone casing to bridge volume casing; (2) bridge volume casing to neck volume casing. As printed, the drawing has three separate casing grounds: the neck volume Solder spot (neck bare, bridge ground wire, jack sleeve), the bridge volume Solder spot (bridge bare, phase push/pull ground lug, toggle ground lug) and the master tone Solder spot (only the .047 cap). With nothing joining them, the bridge pickup never reaches the output and the tone does nothing. The sheet itself prints '\*\*All pot casings MUST be grounded\*\*', and Seymour Duncan's sibling sheet 2H\_3B\_2VppSPppPH\_1TppSPL (the same controls with a three-way blade) draws exactly these two casing links. The links are routed as in that sibling. - Source title: '2 HUMBUCKERS', '2 VOLUME push/pull: Series/Parallel, push/pull: Phase', '1 TONE push/pull Coil Split', '3 WAY TOGGLE'. The pots are labelled 'Neck Volume 500k series/parallel', 'Bridge Volume 500k phase' and 'Master Tone 500k push/pull'. - Source note: '\*\*All pot casings MUST be grounded\*\*'. - Both pickups' red and white leads go to the master tone's push/pull: the bridge pair to the middle-left lug, the neck pair to the middle-right lug. Its bottom-left lug runs to the bridge black at the bridge volume push/pull; its bottom-right lug runs to the neck green at the neck volume push/pull. - The bridge black and green go to the two middle lugs of the bridge volume's push/pull, whose top and bottom rows are cross-wired in an X; the line from its top-right lug carries on through the bottom-left lug to the bridge volume Solder spot. - The neck green goes to the neck volume push/pull middle-right lug, not to a casing; the switch's top-right lug grounds it. The bottom two lugs are jumpered. - The bridge volume's input comes from the neck volume push/pull top-left lug, not straight from the pickup. - The master tone's left lug takes its signal from the toggle's middle (output) lug; its right lug is left unconnected. Each volume's right lug is bent onto its casing. - The toggle's ground lug runs to the bridge volume Solder spot; the bridge ground wire ends on the neck volume Solder spot. - Solder = location for ground (earth) connections. - The toggle lugs and the push/pull lugs are not labelled in the source, so they are mapped by what each does. ## Connections 1. Neck green → Neck volume push/pull middle-right lug (wire, green) 2. Neck bare → Neck volume casing (shield, bare): Runs round the top right to the neck volume Solder spot. 3. Bridge green → Bridge volume push/pull middle-right lug (wire, green): Hops one wire. 4. Bridge bare → Bridge volume casing (shield, bare) 5. .047 cap → Master tone casing (case) 6. Bridge volume push/pull bottom-left lug → Bridge volume casing (case, black): The X arm's line carries on to the Solder spot. 7. Bridge volume right lug → Bridge volume casing (case): Lug bent onto the casing. 8. Neck volume push/pull top-right lug → Neck volume casing (case, black): Hops the neck green. 9. Neck volume right lug → Neck volume casing (case): Lug bent onto the casing. 10. Neck volume casing → Jack sleeve (wire, black) 11. Bridge ground wire → Neck volume casing (wire, black) 12. Toggle frame ground lug → Bridge volume casing (wire, black): One hop. 13. Master tone casing → Bridge volume casing (case, black): ADDED, not drawn on this sheet: grounds the master tone casing ('All pot casings MUST be grounded'; drawn on the sibling sheet 2H\_3B\_2VppSPppPH\_1TppSPL). 14. Bridge volume casing → Neck volume casing (case, black): ADDED, not drawn on this sheet: joins the bridge volume ground group to the neck volume and jack sleeve ('All pot casings MUST be grounded'; drawn on the sibling sheet 2H\_3B\_2VppSPppPH\_1TppSPL). 15. Master tone left lug → Toggle middle lug (wire, black): Hops the toggle ground wire. 16. Bridge volume middle lug → Toggle top lug (wire, black): Hops one wire. 17. Neck volume middle lug → Toggle bottom lug (wire, black): Hops one wire. 18. Toggle middle lug → Jack tip (wire, black): Two hops. 19. Neck black → Neck volume left lug (wire, black) 20. Neck white → Master tone push/pull middle-right lug (wire, white) 21. Neck red → Master tone push/pull middle-right lug (wire, red): Shares the lug with the neck white. 22. Bridge black → Bridge volume push/pull middle-left lug (wire, black) 23. Bridge white → Master tone push/pull middle-left lug (wire, white) 24. Bridge red → Master tone push/pull middle-left lug (wire, red): Shares the lug with the bridge white. 25. Master tone push/pull bottom-left lug → Bridge volume push/pull middle-left lug (wire, black): Hops the bridge green. 26. Master tone push/pull bottom-right lug → Neck volume push/pull middle-right lug (wire, black): Hops two wires. 27. Master tone middle lug → .047 cap (wire) 28. Bridge volume push/pull top-left lug → Neck volume push/pull middle-left lug (wire, black): Arcs up, hops the bridge green. 29. Bridge volume push/pull top-left lug → Bridge volume push/pull bottom-right lug (wire, black): One arm of the X. 30. Bridge volume push/pull top-right lug → Bridge volume push/pull bottom-left lug (wire, black): Other arm of the X. 31. Neck volume push/pull top-left lug → Bridge volume left lug (wire, black): Hops two wires. 32. Neck volume push/pull bottom-left lug → Neck volume push/pull bottom-right lug (bridge, black): Jumper across the row nearest the pot. ## What each position does - Neck; neck vol down, bridge vol down, tone down: Neck pickup (both coils). - Both; neck vol down, bridge vol down, tone down: Neck pickup (both coils) and Bridge pickup (both coils) in parallel. Source: Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output. - Bridge; neck vol down, bridge vol down, tone down: Bridge pickup (both coils). Source: Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output. - Neck; neck vol down, bridge vol down, tone pulled: Neck pickup (split to one coil). Source: Master tone pulled (coil split): both humbuckers split. - Both; neck vol down, bridge vol down, tone pulled: Neck pickup (split to one coil) and Bridge pickup (split to one coil) in parallel. Source: Master tone pulled (coil split): both humbuckers split. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output. - Bridge; neck vol down, bridge vol down, tone pulled: Bridge pickup (split to one coil). Source: Master tone pulled (coil split): both humbuckers split. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output. - Neck; neck vol down, bridge vol pulled, tone down: Neck pickup (both coils). - Both; neck vol down, bridge vol pulled, tone down: Neck pickup (both coils) and Bridge pickup (both coils) in parallel. Source: Bridge volume pulled (phase): the bridge pickup's phase is reversed. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output. - Bridge; neck vol down, bridge vol pulled, tone down: Bridge pickup (both coils). Source: Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output. - Neck; neck vol down, bridge vol pulled, tone pulled: Neck pickup (split to one coil). Source: Master tone pulled (coil split): both humbuckers split. - Both; neck vol down, bridge vol pulled, tone pulled: Neck pickup (split to one coil) and Bridge pickup (split to one coil) in parallel. Source: Bridge volume pulled (phase): the bridge pickup's phase is reversed. Master tone pulled (coil split): both humbuckers split. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output. - Bridge; neck vol down, bridge vol pulled, tone pulled: Bridge pickup (split to one coil). Source: Master tone pulled (coil split): both humbuckers split. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output. - Neck; neck vol pulled, bridge vol down, tone down: Neck pickup (both coils) and Bridge pickup (both coils) in series. Source: Neck volume pulled (series/parallel): the neck green feeds the bridge pickup, so both play in series through the neck volume. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output. - Both; neck vol pulled, bridge vol down, tone down: Neck pickup (both coils) and Bridge pickup (both coils) in series. Source: Neck volume pulled (series/parallel): the neck green feeds the bridge pickup, so both play in series through the neck volume. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output. - Bridge; neck vol pulled, bridge vol down, tone down: No pickup reaches the output. Source: Neck volume pulled (series/parallel): the bridge volume is cut off from the bridge pickup, so the bridge position is silent. - Neck; neck vol pulled, bridge vol down, tone pulled: Neck pickup (split to one coil) and Bridge pickup (split to one coil) in series. Source: Neck volume pulled (series/parallel): the neck green feeds the bridge pickup, so both play in series through the neck volume. Master tone pulled (coil split): both humbuckers split. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output. - Both; neck vol pulled, bridge vol down, tone pulled: Neck pickup (split to one coil) and Bridge pickup (split to one coil) in series. Source: Neck volume pulled (series/parallel): the neck green feeds the bridge pickup, so both play in series through the neck volume. Master tone pulled (coil split): both humbuckers split. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output. - Bridge; neck vol pulled, bridge vol down, tone pulled: No pickup reaches the output. Source: Neck volume pulled (series/parallel): the bridge volume is cut off from the bridge pickup, so the bridge position is silent. - Neck; neck vol pulled, bridge vol pulled, tone down: Neck pickup (both coils) and Bridge pickup (both coils) in series. Source: Neck volume pulled (series/parallel): the neck green feeds the bridge pickup, so both play in series through the neck volume. Bridge volume pulled (phase): the bridge pickup's phase is reversed. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output. - Both; neck vol pulled, bridge vol pulled, tone down: Neck pickup (both coils) and Bridge pickup (both coils) in series. Source: Neck volume pulled (series/parallel): the neck green feeds the bridge pickup, so both play in series through the neck volume. Bridge volume pulled (phase): the bridge pickup's phase is reversed. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output. - Bridge; neck vol pulled, bridge vol pulled, tone down: No pickup reaches the output. Source: Neck volume pulled (series/parallel): the bridge volume is cut off from the bridge pickup, so the bridge position is silent. - Neck; neck vol pulled, bridge vol pulled, tone pulled: Neck pickup (split to one coil) and Bridge pickup (split to one coil) in series. Source: Neck volume pulled (series/parallel): the neck green feeds the bridge pickup, so both play in series through the neck volume. Bridge volume pulled (phase): the bridge pickup's phase is reversed. Master tone pulled (coil split): both humbuckers split. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output. - Both; neck vol pulled, bridge vol pulled, tone pulled: Neck pickup (split to one coil) and Bridge pickup (split to one coil) in series. Source: Neck volume pulled (series/parallel): the neck green feeds the bridge pickup, so both play in series through the neck volume. Bridge volume pulled (phase): the bridge pickup's phase is reversed. Master tone pulled (coil split): both humbuckers split. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output. - Bridge; neck vol pulled, bridge vol pulled, tone pulled: No pickup reaches the output. Source: Neck volume pulled (series/parallel): the bridge volume is cut off from the bridge pickup, so the bridge position is silent. - Two casing ground wires (master tone to bridge volume, bridge volume to neck volume) are not drawn on the sheet and were added from its printed note '\*\*All pot casings MUST be grounded\*\*' and the sibling sheet 2H\_3B\_2VppSPppPH\_1TppSPL. The analysed results depend on them. - 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 does what; this follows the usual push/pull behaviour (pulled joins the middle lugs to the lugs nearest the pot), which gives the titled function for every switch. - The silent bridge position with the series/parallel knob pulled follows from the drawn wiring; the sheet does not mention it. ## Check before plugging in - Before powering up, meter between the three pot casings and the jack sleeve: all should read as a short once the two added ground wires are in. - All knobs down: the toggle gives neck, both in parallel, and bridge. - Pull the neck volume: the neck and both positions read the two humbuckers in series; the bridge position goes silent. - Pull the bridge volume with the toggle in the middle: the pickups play out of phase. - Pull the tone: each humbucker reads roughly one coil. ## Source Tinkercaster's own drawing of the Seymour Duncan diagram 2H\_3G\_2VppSPppPH\_1TppSPL, revision 1. Not the manufacturer's artwork and not endorsed by Seymour Duncan. See also [all wiring diagrams]().