# Two humbuckers with a three-way toggle, two volumes and a push/pull split on the bridge volume Canonical page: https://guitarwiring.app/wiring-diagrams/seymour-duncan/two-humbuckers-three-way-toggle-two-volumes-bridge-push-pull-split Two humbuckers · Three-way toggle · Two volumes (bridge push/pull coil split) · No tone Neck and bridge Seymour Duncan humbuckers, each with its own 500k volume, on a three-way toggle with no tone control. The push/pull switch sits on the bridge volume, but both pickups' red–white coil links are wired to it, so pulling the knob splits both humbuckers at once. Drawing: https://guitarwiring.app/wiring-diagrams/seymour-duncan/two-humbuckers-three-way-toggle-two-volumes-bridge-push-pull-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 toggle: 3-Way Toggle; compatible example (Switchcraft 3-Way Toggle) - Bridge volume 500k push/pull: Bridge volume 500k push/pull; 500k; compatible example (500k Push-Pull DPDT) - Neck volume 500k: Neck volume 500k; 500k; compatible example (CTS 500k Audio Pot) - Output jack: Output Jack; compatible example (Switchcraft \#11) - Bridge ground: Bridge ground wire; generic (Bridge ground wire) ## Specific to this wiring - The source title reads 'Bridge push/pull coil split': the push/pull is the bridge volume, and the drawing wires both pickups' red and white leads to it. - The neck red and white leads run over the top ('Red & White') and are soldered together onto the push/pull's middle right lug; the bridge red and white leads go together onto the middle left lug. None of them are taped off. - The two push/pull lugs nearest the pot are jumpered together and wired to the bridge volume casing; the two lugs furthest from the pot stay empty. - Both pickups' green and bare leads and the bridge ground wire end on the bridge volume casing, which is linked to the neck volume casing. - The toggle frame lug goes to the neck volume casing, and the jack sleeve runs from the neck volume casing. - The source legend marks the grey 'Solder' spots as the location for ground (earth) connections. - The toggle tags are not labelled in the source, so they are mapped by what each does. ## Connections 1. Neck green → Bridge volume casing (case, green) 2. Neck bare → Bridge volume casing (shield, bare): Drawn grey beside the green. 3. Bridge green → Bridge volume casing (case, green) 4. Bridge bare → Bridge volume casing (shield, bare): Drawn grey beside the green. 5. Push/pull bottom left lug → Bridge volume casing (case, black) 6. Bridge volume right lug → Bridge volume casing (case): Lug bent onto the casing. 7. Bridge ground wire → Bridge volume casing (shield, black) 8. Bridge volume casing → Neck volume casing (case, black) 9. Neck volume right lug → Neck volume casing (case): Lug bent onto the lower Solder spot. 10. Toggle frame lug → Neck volume casing (case, black) 11. Neck volume casing → Jack sleeve (wire, black) 12. Bridge volume middle lug → Toggle bridge lug (wire, black) 13. Neck volume middle lug → Toggle neck lug (wire, black) 14. Toggle middle lug → Jack tip (wire, black) 15. Neck white → Push/pull middle right lug (wire, white) 16. Neck red → Push/pull middle right lug (wire, red): Shares the lug with the neck white lead. 17. Neck black → Neck volume left lug (input) (wire, black) 18. Bridge white → Push/pull middle left lug (wire, white) 19. Bridge red → Push/pull middle left lug (wire, red): Shares the lug with the bridge white lead. 20. Bridge black → Bridge volume left lug (input) (wire, black) 21. Push/pull bottom left lug → Push/pull bottom right lug (bridge, black) ## 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 neck red and white leads are wired to the bridge volume's push/pull. - Neck + bridge, knob pulled: both split: Neck pickup (split to one coil) and Bridge pickup (split to one coil) in parallel. - Bridge, knob pulled: single coil: Bridge pickup (split to one coil). Source: Bridge push/pull coil split. - 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 toggle 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, including the neck pickup. - In the neck or bridge position, turning the selected pickup's volume to zero should read tip to sleeve as a short. ## Source Tinkercaster's own drawing of the Seymour Duncan diagram 2H\_3G\_2VppSPLB, revision 1. Not the manufacturer's artwork and not endorsed by Seymour Duncan. See also [all wiring diagrams]().