Seymour Duncan wiring

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

Two humbuckers · Three-way toggle · Two push/pull volumes (one split per pickup)

Neck and bridge Seymour Duncan humbuckers, each with its own 500k push/pull volume before a three-way toggle, and no tone control. Each volume's push/pull switch grounds its own pickup's red–white coil link, so each humbucker can be split to a single coil on its own.

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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 toggleSource: 3-way toggle (unlabelled)—Switchcraft 3-Way ToggleExample part
Bridge volume 500k push/pullSource: Bridge Volume 500k push/pull500k500k Push-Pull DPDTExample part
Neck volume 500k push/pullSource: Neck Volume 500k push/pull500k500k Push-Pull DPDTExample part
Output jackSource: Output Jack—Switchcraft #11Example part
Bridge groundSource: 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

  • The source labels both volumes as push/pull coil split switches.
  • On each pickup, the red and white leads are soldered together onto the middle lug of the switch's top row, not taped off.
  • The green and bare leads go to the top-row lug nearest the pot, which is wired to that pot's casing; the other switch lugs stay empty.
  • The toggle's frame lug runs to the neck volume casing, and the same line carries on to the bridge volume casing.
  • The bridge ground wire and the jack sleeve end on the bridge volume 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 split switch lug nearest the potWiregreen
2Neck bare shieldNeck split switch lug nearest the potDrawn grey beside the green.Shield or groundbare
3Neck split switch lug nearest the potNeck volume casingShort wire to the solder spot.To a pot casingblack
4Neck volume top lugNeck volume casingLug bent onto the casing.To a pot casing
5Bridge greenBridge split switch lug nearest the potWiregreen
6Bridge bare shieldBridge split switch lug nearest the potDrawn grey beside the green.Shield or groundbare
7Bridge split switch lug nearest the potBridge volume casingShort wire to the solder spot.To a pot casingblack
8Bridge volume top lugBridge volume casingLug bent onto the casing.To a pot casing
9Toggle top lugNeck volume casingTo a pot casingblack
10Neck volume casingBridge volume casingThe same line runs on from the neck solder spot down to the bridge solder spot.To a pot casingblack
11Bridge ground wireBridge volume casingWireblack
12Bridge volume casingJack sleeveWireblack
13Neck volume middle lugToggle neck lugWireblack
14Bridge volume middle lugToggle bridge lugWireblack
15Toggle middle lugJack tipWireblack
16Neck whiteNeck split switch middle lugWirewhite
17Neck redNeck split switch middle lugShares the lug with the neck white.Wirered
18Neck blackNeck volume bottom lug (input)Wireblack
19Bridge whiteBridge split switch middle lugWirewhite
20Bridge redBridge split switch middle lugShares the lug with the bridge white.Wirered
21Bridge blackBridge volume bottom lug (input)Wireblack

What each position does

SettingThe sourceEngine result
Neck, neck knob down, bridge knob down—Neck pickup (both coils).
Both, neck knob down, bridge knob down—Neck pickup (both coils) and Bridge pickup (both coils) in parallel.
Bridge, neck knob down, bridge knob down—Bridge pickup (both coils).
Neck, neck knob down, bridge knob pulled—Neck pickup (both coils).
Both, neck knob down, bridge knob pulledPulling a volume splits that pickup.Neck pickup (both coils) and Bridge pickup (split to one coil) in parallel.
Bridge, neck knob down, bridge knob pulledPulling a volume splits that pickup.Bridge pickup (split to one coil).
Neck, neck knob pulled, bridge knob downPulling a volume splits that pickup.Neck pickup (split to one coil).
Both, neck knob pulled, bridge knob downPulling a volume splits that pickup.Neck pickup (split to one coil) and Bridge pickup (both coils) in parallel.
Bridge, neck knob pulled, bridge knob down—Bridge pickup (both coils).
Neck, neck knob pulled, bridge knob pulledPulling a volume splits that pickup.Neck pickup (split to one coil).
Both, neck knob pulled, bridge knob pulledPulling a volume splits that pickup.Neck pickup (split to one coil) and Bridge pickup (split to one coil) in parallel.
Bridge, neck knob pulled, bridge knob pulledPulling a volume splits that pickup.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

  • Both knobs down: in each toggle position the meter across the jack reads the selected humbucker, or both in parallel in the middle.
  • Pulling a volume drops its own pickup's reading to roughly one coil's resistance and leaves the other pickup unchanged.
  • With a volume at zero, its toggle lug 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.