# Two humbuckers with a three-way toggle and a push/pull phase volume

Canonical page: https://guitarwiring.app/wiring-diagrams/seymour-duncan/two-humbuckers-three-way-toggle-push-pull-phase-volume

Two humbuckers · Three-way toggle · One push/pull volume (phase)

Neck and bridge Seymour Duncan humbuckers on a three-way toggle and one 500k volume. The volume's push/pull switch reverses the neck pickup's black and green leads, so with the toggle in the middle, pulling the knob puts the two pickups out of phase.

Drawing: https://guitarwiring.app/wiring-diagrams/seymour-duncan/two-humbuckers-three-way-toggle-push-pull-phase-volume.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)
- Volume 500k push/pull: Volume 500k push/pull Phase Switch; 500k; compatible example (500k Push-Pull DPDT)
- Output Jack: Output Jack; compatible example (Switchcraft \#11)
- Bridge ground: Bridge ground wire; generic (Bridge ground wire)

## Specific to this wiring

- On each pickup, solder the red and white leads together and tape them off.
- Only the neck pickup goes through the push/pull switch: its black lead goes to one middle lug and its green lead to the other middle lug.
- Two jumpers cross inside the switch: each top lug is wired to the bottom lug of the other column.
- The lower left switch lug goes to the volume casing; the upper left lug goes to the toggle's neck lug.
- The bridge ground wire, both pickups' bare leads, the bridge green and the jack sleeve all end on the volume casing.
- The toggle tags are not labelled in the source, so they are mapped by what each does.

## Connections

1. Neck green → Push/pull right middle lug (wire, green)
2. Neck bare shield → Volume casing (shield, bare): Drawn grey.
3. Bridge green → Volume casing (case, green)
4. Bridge bare shield → Volume casing (shield, bare): Drawn grey beside the green.
5. Push/pull left bottom lug → Volume casing (case, black)
6. Toggle side lug → Volume casing (case, black)
7. Volume right lug → Volume casing (case): Lug bent onto the casing.
8. Volume casing → Jack sleeve (wire, black)
9. Bridge ground wire → Volume casing (wire, black)
10. Bridge black → Toggle bridge lug (wire, black)
11. Push/pull left top lug → Toggle neck lug (wire, black)
12. Toggle middle lug → Volume left lug (input) (wire, black)
13. Neck red → Neck white (insulated, red): Soldered together and taped off.
14. Neck black → Push/pull left middle lug (wire, black)
15. Bridge red → Bridge white (insulated, red): Soldered together and taped off.
16. Push/pull right bottom lug → Push/pull left top lug (wire, black): Diagonal jumper across the switch.
17. Push/pull right top lug → Push/pull left bottom lug (wire, black): Diagonal jumper across the switch.
18. Volume middle lug → Jack tip (wire, black)

## What each position does

- Neck, knob down: Neck Pickup (both coils). Source: Neck pickup, normal phase.
- Both, knob down: in phase: Neck Pickup (both coils) and Bridge Pickup (both coils) in parallel. Source: Neck and bridge together, in phase.
- Bridge, knob down: Bridge Pickup (both coils). Source: Bridge pickup.
- Neck, knob pulled: neck reversed: Neck Pickup (both coils). Source: The neck's leads are swapped; on its own it sounds the same as knob down.
- Both, knob pulled: out of phase: Neck Pickup (both coils) and Bridge Pickup (both coils) in parallel. Source: Neck reversed against the bridge: the phase switch.
- Bridge, knob pulled: Bridge Pickup (both coils). Source: The bridge does not pass through the push/pull.

- 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 reverses the phase; this follows the usual push/pull behaviour (pulled joins the middle lugs to the lugs nearest the pot).

## Check before plugging in

- In each toggle position, the meter across the jack should read the selected pickup, or both in parallel in the middle, with the knob up or down.
- Knob pulled: the neck green lead should read continuity to the toggle's neck lug and the neck black lead to ground.
- Each taped red–white joint should read open to ground.

## Source

Tinkercaster's own drawing of the Seymour Duncan diagram 2H\_3G\_1VppPH, revision 1. Not the manufacturer's artwork and not endorsed by Seymour Duncan.

See also [all wiring diagrams](<https://guitarwiring.app/wiring-diagrams/index.md>).