# Two humbuckers with a three-way blade, two volumes and a push/pull split tone Canonical page: https://guitarwiring.app/wiring-diagrams/seymour-duncan/two-humbuckers-three-way-blade-two-volumes-push-pull-split-tone Two humbuckers · Three-way blade · Two volumes · One push/pull tone (splits both) Neck and bridge Seymour Duncan humbuckers, each with its own 500k volume before a three-way blade, and a 500k master tone with a .047 µF capacitor. The tone's push/pull switch grounds the red–white coil link of both pickups at once, so pulling the knob turns each humbucker into a single coil. Drawing: https://guitarwiring.app/wiring-diagrams/seymour-duncan/two-humbuckers-three-way-blade-two-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 blade: 3 Way Blade; compatible example (CRL 3-Way Blade) - Bridge volume 500k: Bridge Volume 500k; 500k; compatible example (CTS 500k Audio Pot) - Neck volume 500k: Neck Volume 500k; 500k; compatible example (CTS 500k Audio Pot) - Master tone 500k push/pull: Master Tone 500k (push/pull Split Switch); 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: Bridge Ground Wire; generic (Bridge ground wire) ## Specific to this wiring - The source says the tone's push/pull split switch splits both pickups. - Each pickup's red and white leads are soldered together onto one middle lug of the tone's switch, not taped off: bridge on the left column, neck on the right. - The two switch lugs in the row nearest the pot are jumpered together and wired to the tone casing; the row furthest from the pot stays empty. - Each volume's middle lug feeds a common lug on the blade; three short jumpers join four other lugs into one output that runs to the jack tip. - The master tone takes its signal from the jack tip, after the blade. - The bridge ground wire ends on the neck volume casing; the bridge volume casing, neck volume casing and tone casing are chained together, and the jack sleeve ends on the tone casing. - Solder = location for ground (earth) connections. - The source does not number the blade positions or its lugs; the lugs are mapped by what they do (neck, both, bridge). ## Connections 1. Neck green → Neck volume casing (case, green) 2. Neck bare shield → Neck volume casing (shield, bare): Drawn grey beside the green. 3. Bridge green → Bridge volume casing (case, green) 4. Bridge bare shield → Bridge volume casing (shield, bare): Drawn grey beside the green. 5. Bridge volume right lug → Bridge volume casing (case): Lug bent onto the casing. 6. Neck volume right lug → Neck volume casing (case): Lug bent onto the casing. 7. Bridge volume casing → Neck volume casing (case, black): Hops over the neck bundle. 8. Bridge ground wire → Neck volume casing (wire, black) 9. Neck volume casing → Tone casing (case, black) 10. Tone casing → Jack sleeve (wire, black) 11. .047 cap → Tone casing (case) 12. Split switch left lug nearest the pot → Tone casing (case, black) 13. Bridge volume middle lug → Blade left column, bottom lug (common) (wire, black): Hops over the neck red/white bundle. 14. Neck volume middle lug → Blade right column, top lug (common) (wire, black): Loops down, then arcs over the top of the blade. 15. Blade left column, top lug → Blade left column, second lug (bridge, black) 16. Blade left column, second lug → Blade right column, third lug (bridge, black) 17. Blade right column, third lug → Blade right column, bottom lug (bridge, black) 18. Blade right column, bottom lug → Jack tip (wire, black) 19. Neck black → Neck volume left lug (input) (wire, black) 20. Neck white → Split switch right middle lug (wire, white) 21. Neck red → Split switch right middle lug (wire, red): Shares the lug with the neck white. 22. Bridge black → Bridge volume left lug (input) (wire, black) 23. Bridge white → Split switch left middle lug (wire, white) 24. Bridge red → Split switch left middle lug (wire, red): Shares the lug with the bridge white. 25. Tone left lug → Jack tip (wire, black) 26. Tone middle lug → .047 cap (wire) 27. Split switch left lug nearest the pot → Split switch right lug nearest the pot (wire, black): Short jumper along the row nearest the pot. ## What each position does - Neck, knob down: full humbucker: Neck pickup (both coils). - Neck + bridge, knob down: both humbuckers: Neck pickup (both coils) and Bridge pickup (both coils) in parallel. - Bridge, knob down: full humbucker: Bridge pickup (both coils). - Neck, knob pulled: single coil: Neck pickup (split to one coil). Source: The tone's push/pull 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 tone's push/pull splits both pickups. - Bridge, knob pulled: single coil: Bridge pickup (split to one coil). Source: The tone's push/pull 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). ## Check before plugging in - Tone knob down: in each blade position the meter across the jack reads the selected humbucker, or both in parallel in the middle. - Tone knob up: each reading drops to roughly one coil's resistance. - With a volume at zero, its pickup's black lead reads as a short to ground. ## Source Tinkercaster's own drawing of the Seymour Duncan diagram 2H\_3B\_2V\_1TppSPL, revision 1. Not the manufacturer's artwork and not endorsed by Seymour Duncan. See also [all wiring diagrams]().