# Two humbuckers with a three-way blade and one volume

Canonical page: https://guitarwiring.app/wiring-diagrams/seymour-duncan/two-humbuckers-three-way-blade-one-volume

Two humbuckers · Three-way blade · One volume · No tone

Neck and bridge Seymour Duncan humbuckers on a three-way blade with one 500k audio-taper volume and no tone. Each pickup's black lead goes to a switch common.

Drawing: https://guitarwiring.app/wiring-diagrams/seymour-duncan/two-humbuckers-three-way-blade-one-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 Blade Switch: 3-Way Blade Switch; compatible example (CRL 3-Way Blade)
- Volume 500k audio taper: Volume 500k Audio Taper; 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 a common lug on the switch; three short jumpers join four other lugs into one output to the volume.
- The source does not number the switch positions; the lugs are mapped by what they do (neck, both, bridge).

## Connections

1. Neck green → Volume casing (case, green)
2. Neck bare → Volume casing (shield, bare): Drawn grey beside the green.
3. Bridge green → Volume casing (case, green)
4. Bridge bare → Volume casing (shield, bare): Drawn grey beside the green.
5. Volume right lug → Volume casing (case): Lug bent onto the lower solder spot.
6. Volume casing → Jack sleeve (wire, black)
7. Bridge ground wire → Volume casing (shield, black)
8. Neck black → Switch top-right lug (common) (wire, black)
9. Bridge black → Switch bottom-left lug (common) (wire, black)
10. Switch top-left lug → Switch second left lug (bridge, black)
11. Switch second left lug → Switch third right lug (bridge, black)
12. Switch third right lug → Switch bottom-right lug (bridge, black)
13. Switch bottom-right lug → Volume left lug (input) (wire, black)
14. Neck red → Neck white (insulated, red): Soldered together and taped off.
15. Bridge red → Bridge white (insulated, red): Soldered together and taped off.
16. Volume middle lug → Jack tip (wire, black)

## What each position does

- Neck: Neck Pickup (both coils).
- Neck + bridge: Neck Pickup (both coils) and Bridge Pickup (both coils) in parallel.
- Bridge: Bridge Pickup (both coils).

- 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 switch 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\_3B\_1V, 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>).