Seymour Duncan wiring

Two humbuckers with a three-way toggle, two volumes and one tone

Two humbuckers · Three-way toggle · Two volumes · Master tone

A Les Paul style layout with one master tone: each humbucker has its own volume, the toggle picks neck, both or bridge, and a single tone acts on whatever is selected. It needs a three-way toggle, three 500k pots, a .047 µF capacitor and a mono jack.

Loading interactive diagram…

Viewed from the back of the controls, as you solder them. Select a component to move, rotate or flip it. Follow wires and try the switches in simulation mode. Use Full screen for a closer look.

Parts and values

In the drawingValuePart
Neck humbuckerSource: Neck Pickup (four-conductor)—Humbucker (four-conductor, Seymour Duncan colours)Generic
Bridge humbuckerSource: Bridge Pickup (four-conductor)—Humbucker (four-conductor, Seymour Duncan colours)Generic
3-way toggle—Switchcraft 3-Way ToggleExample part
Bridge volumeSource: Volume 500k (left, bridge)500kCTS 500k Audio PotExample part
Neck volumeSource: Volume 500k (right, neck)500kCTS 500k Audio PotExample part
Master toneSource: Tone 500k500kCTS 500k Audio PotExample part
.047 µF tone capSource: .047 cap47nFOrange Drop .047µFExample part
Output jackSource: Output Jack—Switchcraft #11Example part

“Example part” means any part with the same value and lugs will do; the source does not name a brand. “Generic” stands in for an unspecified pickup: check your own pickup's lead colours before you solder.

Specific to this wiring

  • On each humbucker, solder the red and white leads together and tape the joint off. They must not touch ground or anything else.
  • The green and bare leads of each humbucker go to that pickup's volume casing.
  • The single tone sits after the toggle, on the output, so it works in every position.
  • The toggle's ground lug goes to the bridge volume casing.
  • The bridge ground wire goes to the tone pot casing.

Connections

In soldering order: grounds first, then the switch, the pickups and the signal path. Choose Show to highlight a connection in the drawing.

#FromToHowDrawing
1Bridge greenBridge volume casingTo a pot casinggreen
2Bridge bareBridge volume casingShield or groundbare
3Bridge volume right lugBridge volume casingLug bent onto the casing.To a pot casing
4Neck greenNeck volume casingTo a pot casinggreen
5Neck bareNeck volume casingShield or groundbare
6Neck volume right lugNeck volume casingLug bent onto the casing.To a pot casing
7Toggle ground lugBridge volume casingTo a pot casingblack
8.047 capTone casingTo a pot casing
9Bridge volume casingNeck volume casingTo a pot casingblack
10Neck volume casingTone casingTo a pot casingblack
11Tone casingJack sleeveWireblack
12Bridge volume middle lugToggle left lugWireblack
13Neck volume middle lugToggle right lugWireblack
14Toggle middle lugTone left lugWireblack
15Bridge redBridge whiteSoldered together and taped off.Joined and insulatedred
16Bridge blackBridge volume left lugWireblack
17Neck redNeck whiteSoldered together and taped off.Joined and insulatedred
18Neck blackNeck volume left lugRuns over the top of the cavity.Wireblack
19Tone left lugJack tipWireblack
20Tone middle lug.047 capWire
21Bridge ground wireTone casingDrawn leaving the page towards the bridge.WireNot drawn

What each position does

SettingThe sourceEngine result
Neck (rhythm)Not tabulated in the source; the neck volume feeds the rhythm lug.Neck humbucker (both coils).
BothMiddle toggle position joins both pickup lugs.Neck humbucker (both coils) and Bridge humbucker (both coils) in parallel.
Bridge (treble)Not tabulated in the source; the bridge volume feeds the treble lug.Bridge humbucker (both coils).

Checked with the Tinkercaster wiring engine against the switching the source describes.

  • Pickup resistance is not specified, so no numeric meter readings are given.
  • Each humbucker is assumed to be hum-cancelling as designed; the source does not state magnet polarity.

Before you solder

Ticks are kept in this browser only, as a reminder. They are not a check of your joints. New to soldering? Read the soldering cheat sheet.

Check before plugging in

  • Check that each red/white series joint is insulated and has no direct short to ground. Resistance to ground through a pickup coil is expected; it should not read as an open circuit.
  • With both volumes up, tip to sleeve should read a pickup's resistance in the neck and bridge positions, and a lower value in the middle position.
  • In this wiring, turning either volume to zero in the middle position silences both pickups.

Measure across the output jack with a multimeter on its resistance range. No exact readings are given where the source does not specify the pickups.