# Two humbuckers with a three-way toggle and two volumes

Canonical page: https://guitarwiring.app/wiring-diagrams/seymour-duncan/two-humbuckers-three-way-toggle-two-volumes

Two humbuckers · Three-way toggle · Two volumes · No tone

Neck and bridge Seymour Duncan humbuckers, each with its own 500k volume before a three-way toggle, and no tone control. The red and white leads on each pickup are joined and taped off.

Drawing: https://guitarwiring.app/wiring-diagrams/seymour-duncan/two-humbuckers-three-way-toggle-two-volumes.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 (bridge): Volume 500k (left, bridge); 500k; compatible example (CTS 500k Audio Pot)
- Volume 500k (neck): Volume 500k (right, neck); 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

- On each pickup, solder the red and white leads together and tape them off.
- Each pickup's black lead goes to its own volume; each volume's middle lug feeds one outer toggle tag.
- The toggle tags are not labelled in the source, so they are mapped by what each does.

## Connections

1. Bridge green → Bridge volume casing (case, green)
2. Neck green → Neck volume casing (case, green)
3. Bridge bare shield → Bridge volume casing (shield, bare)
4. Neck bare shield → Neck volume casing (shield, bare)
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. Toggle frame lug → Bridge volume casing (case, black)
8. Bridge volume casing → Jack sleeve (wire, black)
9. Neck volume casing → Bridge volume casing (case, black): Arcs over the toggle leads without joining them.
10. Bridge Ground Wire → Neck volume casing (shield, black)
11. Bridge volume middle lug → Toggle bridge lug (wire, black)
12. Neck volume middle lug → Toggle neck lug (wire, black)
13. Toggle middle lug → Jack tip (wire, black)
14. Bridge red → Bridge white (insulated, red): Soldered together and taped off.
15. Neck red → Neck white (insulated, red): Soldered together and taped off.
16. Bridge black → Bridge volume left lug (input) (wire, black)
17. Neck black → Neck volume left lug (input) (wire, black)

## What each position does

- Rhythm (neck): Neck pickup (both coils). Source: Neck pickup through the neck volume.
- Both: Neck pickup (both coils) and Bridge pickup (both coils) in parallel. Source: Both pickups, each through its own volume.
- Treble (bridge): Bridge pickup (both coils). Source: Bridge pickup through the bridge volume.

- 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.

## 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.
- Each taped red–white joint should read open to ground.

## Source

Tinkercaster's own drawing of the Seymour Duncan diagram 2H\_3G\_2V, 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>).