Seymour Duncan wiring

Two humbuckers with a three-way toggle, two volumes and a push/pull split tone

Two humbuckers · Three-way toggle · Two volumes · One push/pull tone (splits both)

Neck and bridge Seymour Duncan humbuckers, each with its own 500k volume before a three-way toggle, and a 500k master tone with a .047 µF capacitor. The tone's push/pull switch grounds the red–white coil link of both pickups at once, so pulling the knob turns each humbucker into a single coil.

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 pickupSource: Seymour Duncan Neck Pickup—Humbucker (four-conductor, Seymour Duncan colours)Generic
Bridge pickupSource: Seymour Duncan Bridge Pickup—Humbucker (four-conductor, Seymour Duncan colours)Generic
3-way toggleSource: 3-Way Toggle Switch—Switchcraft 3-Way ToggleExample part
Bridge volume 500kSource: Bridge Volume 500k500kCTS 500k Audio PotExample part
Neck volume 500kSource: Neck Volume 500k500kCTS 500k Audio PotExample part
Output jackSource: Output Jack—Switchcraft #11Example part
Bridge groundSource: Bridge Ground Wire—Bridge ground wireGeneric
Master tone 500k push/pullSource: Master Tone 500k (push/pull Split)500k500k Push-Pull DPDTExample part
.047 capSource: .047 cap (drawn green)47nFOrange Drop .047µFExample 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

  • The source says the tone's push/pull split splits both pickups.
  • Each pickup's red and white leads are soldered together onto one middle lug of the tone's switch, not taped off: bridge on the left column, neck on the right.
  • The two switch lugs in the row nearest the pot are jumpered together and wired to the tone casing; the row furthest from the pot stays empty.
  • The master tone takes its signal from the jack tip, after the toggle.
  • The bridge ground wire and the toggle's frame lug end on the neck volume casing; the jack sleeve ends on the tone casing.
  • Solder = location for ground (earth) connections.
  • The toggle tags are not labelled in the source, so they are mapped by what each does.

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
1Neck greenNeck volume casingTo a pot casinggreen
2Neck bare shieldNeck volume casingDrawn grey beside the green.Shield or groundbare
3Bridge greenBridge volume casingTo a pot casinggreen
4Bridge bare shieldBridge volume casingDrawn grey beside the green.Shield or groundbare
5Bridge volume right lugBridge volume casingLug bent onto the casing.To a pot casing
6Neck volume right lugNeck volume casingLug bent onto the casing.To a pot casing
7Toggle top lugNeck volume casingTo a pot casingblack
8Bridge volume casingNeck volume casingTo a pot casingblack
9Bridge ground wireNeck volume casingWireblack
10Neck volume casingTone casingTo a pot casingblack
11Tone casingJack sleeveWireblack
12.047 capTone casingTo a pot casing
13Split switch left lug nearest the potTone casingTo a pot casingblack
14Bridge volume middle lugToggle bridge lugWireblack
15Neck volume middle lugToggle neck lugWireblack
16Toggle middle lugJack tipWireblack
17Neck blackNeck volume left lug (input)Wireblack
18Neck whiteSplit switch right middle lugWirewhite
19Neck redSplit switch right middle lugShares the lug with the neck white.Wirered
20Bridge blackBridge volume left lug (input)Wireblack
21Bridge whiteSplit switch left middle lugWirewhite
22Bridge redSplit switch left middle lugShares the lug with the bridge white.Wirered
23Tone left lugJack tipWireblack
24Tone middle lug.047 capWire
25Split switch left lug nearest the potSplit switch right lug nearest the potShort jumper along the row nearest the pot.Wireblack

What each position does

SettingThe sourceEngine result
Neck, knob down: full humbucker—Neck pickup (both coils).
Both, knob down: both humbuckers—Neck pickup (both coils) and Bridge pickup (both coils) in parallel.
Bridge, knob down: full humbucker—Bridge pickup (both coils).
Neck, knob pulled: single coilThe tone's push/pull splits both pickups.Neck pickup (split to one coil).
Both, knob pulled: both splitThe tone's push/pull splits both pickups.Neck pickup (split to one coil) and Bridge pickup (split to one coil) in parallel.
Bridge, knob pulled: single coilThe tone's push/pull splits both pickups.Bridge pickup (split to one coil).

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

  • 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 splits; this follows the usual push/pull behaviour (pulled joins the middle lugs to the lugs nearest the pot).

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

  • Tone knob down: in each toggle position the meter across the jack reads the selected humbucker, or both in parallel in the middle.
  • Tone knob up: each reading drops to roughly one coil's resistance.
  • With a volume at zero, its pickup's black lead reads as a short to ground.

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.