Seymour Duncan wiring

Two humbuckers with a three-way blade and a push/pull tone that splits both

Two humbuckers · Three-way blade · One volume · One push/pull tone (split both)

Neck and bridge Seymour Duncan humbuckers on a three-way blade, one 500k volume and one 500k tone with a .047 µF capacitor. The tone's push/pull switch grounds both pickups' red–white links at once, so pulling the knob splits both humbuckers in every blade position.

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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 Blade SwitchSource: 3 Way Blade—CRL 3-Way BladeExample part
Volume 500k500kCTS 500k Audio PotExample part
Tone 500k (push/pull split)Source: Tone 500k Push/Pull500k500k Push-Pull DPDTExample part
.047 capSource: .047 cap (drawn green)47nFOrange Drop .047µFExample part
Output Jack—Switchcraft #11Example part
Bridge Ground WireSource: Bridge ground wire—Bridge ground wireGeneric

“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

  • Each pickup's red and white leads are soldered together onto a middle lug of the tone's push/pull switch, not taped off: neck on one side, bridge on the other.
  • The two push/pull lugs in the row nearest the pot are jumpered together and wired to the tone's casing; that is what grounds both coil links when the switch closes.
  • The blade's output lug goes to the volume's input lug, which also feeds the tone; the volume's middle lug goes to the jack tip.
  • The grey 'Solder' spots mark the ground (earth) connections; the bridge ground wire goes to the volume casing.
  • The source does not number the switch positions; the lugs are mapped by what they do (neck, both, bridge).

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 greenVolume casingTo a pot casinggreen
2Neck bareVolume casingDrawn grey, running with the green.Shield or groundbare
3Bridge greenVolume casingTo a pot casinggreen
4Bridge bareVolume casingDrawn grey, running with the green.Shield or groundbare
5Volume right lugVolume casingLug bent onto the casing.To a pot casing
6.047 capTone casingTo a pot casingblack
7Volume casingTone casingRuns down the left side between the two solder spots.To a pot casingblack
8Tone casingJack sleeveTo a pot casingblack
9Tone casingPush/pull left lug nearest the potTo a pot casingblack
10Bridge ground wireVolume casing'Bridge ground wire' ends on the volume's solder spot.Shield or groundblack
11Neck blackSwitch top-right lug (common)Arcs over the top of the page to the switch.Wireblack
12Bridge blackSwitch bottom-left lug (common)Runs along the bottom, hopping two wires, and up to the switch.Wireblack
13Switch top-left lugSwitch second left lugJumperblack
14Switch second left lugSwitch third right lugJumperblack
15Switch third right lugSwitch bottom-right lugJumperblack
16Switch bottom-right lugVolume left lug (input)Hops two wires on its way to the volume.Wireblack
17Neck whitePush/pull left middle lugWirewhite
18Neck redPush/pull left middle lugShares the lug with the neck white lead.Wirered
19Bridge whitePush/pull right middle lugWirewhite
20Bridge redPush/pull right middle lugShares the lug with the bridge white lead.Wirered
21Volume middle lugJack tipWireblack
22Volume left lugTone left lugStraight down to the tone, drawn lugs up.Wireblack
23Tone middle lug.047 capThe cap is drawn on the back of the tone.Wireblack
24Push/pull left lug nearest the potPush/pull right lug nearest the potShort jumper across the row.Jumperblack

What each position does

SettingThe sourceEngine result
Neck, knob downFull neck humbucker.Neck pickup (both coils).
Neck + bridge, knob downBoth full humbuckers in parallel.Neck pickup (both coils) and Bridge pickup (both coils) in parallel.
Bridge, knob downFull bridge humbucker.Bridge pickup (both coils).
Neck, knob pulled: splitNeck coil link grounded: one neck coil.Neck pickup (split to one coil).
Neck + bridge, knob pulled: both splitBoth coil links grounded: one coil from each pickup in parallel.Neck pickup (split to one coil) and Bridge pickup (split to one coil) in parallel.
Bridge, knob pulled: splitBridge coil link grounded: one bridge coil.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

  • Knob down: in each blade position the meter across the jack reads the selected full humbucker, or both in parallel in the middle.
  • Knob up: each reading drops to roughly one coil's resistance.
  • With the volume at zero, tip and sleeve should read as a short in every position.

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.