# One humbucker, volume, mini-toggle coil split

Canonical page: https://guitarwiring.app/wiring-diagrams/seymour-duncan/one-humbucker-volume-mini-toggle-split

One humbucker · Mini-toggle coil split · One volume

One humbucker, volume, mini-toggle coil split. Transcribed from the manufacturer wiring sheet and checked against the engine.

Drawing: https://guitarwiring.app/wiring-diagrams/seymour-duncan/one-humbucker-volume-mini-toggle-split.svg (back of controls)

## Parts and values

- Bridge humbucker: Bridge humbucker; generic (Humbucker (four-conductor, Seymour Duncan colours))
- Split switch ON/ON mini-toggle: Split switch ON/ON mini-toggle; compatible example (SPDT Mini-Toggle)
- Volume 500k: Volume 500k; 500k; compatible example (CTS 500k Audio Pot)
- Output jack: Output jack; compatible example (Switchcraft \#11)
- Bridge ground: Bridge ground; generic (Bridge ground wire)

## Specific to this wiring

- Mini-toggle tags mapped by function from the catalog contact table where the source leaves them unlabelled.
- The engine steps the pickup selector; standalone mini-toggles share that position index (modifier contacts close when the index matches).

## Connections

1. Mini-toggle bottom-left lug (T3) to volume casing (ground for split) → w3 (wire, black)
2. Pickup green to volume casing → w4 (wire, green)
3. Pickup bare to volume casing → w5 (wire, bare)
4. Volume right lug (lug1) bent to casing → w7 (wire, ground)
5. Jack sleeve to volume casing → w9 (wire, black)
6. Bridge ground wire to volume casing → w10 (wire, black)
7. Pickup white (red lead) to mini-toggle middle-left lug (T2) → w1 (wire, white)
8. Pickup red (white lead code) to same mini-toggle middle-left lug (T2) → w2 (wire, red)
9. Pickup black (hot) to volume left lug (lug3) → w6 (wire, black)
10. Volume middle lug to jack tip → w8 (wire, black)

## What each position does

- Toward T1: Bridge humbucker (both coils). Source: Engine reading with the pickup selector stepped; mini-toggles share that position index.
- Toward T3: Bridge humbucker (split to one coil). Source: Engine reading with the pickup selector stepped; mini-toggles share that position index.

- Mini-toggle lever states are not independently enumerated; they share the pickup-selector position index.

## Check before plugging in



## Source

Tinkercaster's own drawing of the Seymour Duncan diagram 1H\_1V\_mtSPL, 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>).