Seymour Duncan wiring

Two humbuckers, three-way toggle, push/pull series/parallel and phase volumes, push/pull split tone

Two humbuckers · Three-way toggle · 500k push/pull neck volume (series/parallel) · 500k push/pull bridge volume (phase) · 500k push/pull master tone (coil split)

Neck and bridge Seymour Duncan humbuckers, each with its own 500k push/pull volume, into a three-way toggle, with a 500k push/pull master tone and a .047 cap on the output. Pulling the neck volume puts the two pickups in series, pulling the bridge volume reverses the bridge pickup's phase, and pulling the tone splits both humbuckers. Two casing ground wires the sheet leaves out are added so the circuit works.

Two humbuckers, three-way toggle, push/pull series/parallel and phase volumes, push/pull split toneTwo humbuckers, three-way toggle, push/pull series/parallel and phase volumes, push/pull split tone: Two humbuckers · Three-way toggle · 500k push/pull neck volume (series/parallel) · 500k push/pull bridge volume (phase) · 500k push/pull master tone (coil split). Original Tinkercaster drawing with labelled terminals.Neck pickupNeck pickupBridge pickupBridge pickup3-way toggleNeck volume 500k push/pull (series/parallel) · 500k500kBridge volume 500k push/pull (phase) · 500k500kMaster tone 500k push/pull (coil split) · 500k500k.047 cap · 47nF47nFOutput jackBridge ground wireblackgreenwhiteredbareblackgreenwhiteredbareT1T2T3T4lug1lug2lug3sw1sw2sw3sw4sw5sw6lug1lug2lug3sw1sw2sw3sw4sw5sw6lug1lug2lug3sw1sw2sw3sw4sw5sw6abtipsleeveground

Viewed from the back of the controls, as you solder them. Open the interactive diagram to zoom, move components and try the switches.

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
Neck volume 500k push/pull (series/parallel)Source: Neck Volume 500k series/parallel500k500k Push-Pull DPDTExample part
Bridge volume 500k push/pull (phase)Source: Bridge Volume 500k phase500k500k Push-Pull DPDTExample part
Master tone 500k push/pull (coil split)Source: Master Tone 500k push/pull500k500k Push-Pull DPDTExample part
.047 capSource: .047 cap (drawn green)47nFOrange Drop .047µFExample part
Output jackSource: Output Jack—Switchcraft #11Example part
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

  • Departure from the printed sheet: this diagram adds two ground wires that the sheet does not draw. (1) Master tone casing to bridge volume casing; (2) bridge volume casing to neck volume casing. As printed, the drawing has three separate casing grounds: the neck volume Solder spot (neck bare, bridge ground wire, jack sleeve), the bridge volume Solder spot (bridge bare, phase push/pull ground lug, toggle ground lug) and the master tone Solder spot (only the .047 cap). With nothing joining them, the bridge pickup never reaches the output and the tone does nothing. The sheet itself prints '**All pot casings MUST be grounded**', and Seymour Duncan's sibling sheet 2H_3B_2VppSPppPH_1TppSPL (the same controls with a three-way blade) draws exactly these two casing links. The links are routed as in that sibling.
  • Source title: '2 HUMBUCKERS', '2 VOLUME push/pull: Series/Parallel, push/pull: Phase', '1 TONE push/pull Coil Split', '3 WAY TOGGLE'. The pots are labelled 'Neck Volume 500k series/parallel', 'Bridge Volume 500k phase' and 'Master Tone 500k push/pull'.
  • Source note: '**All pot casings MUST be grounded**'.
  • Both pickups' red and white leads go to the master tone's push/pull: the bridge pair to the middle-left lug, the neck pair to the middle-right lug. Its bottom-left lug runs to the bridge black at the bridge volume push/pull; its bottom-right lug runs to the neck green at the neck volume push/pull.
  • The bridge black and green go to the two middle lugs of the bridge volume's push/pull, whose top and bottom rows are cross-wired in an X; the line from its top-right lug carries on through the bottom-left lug to the bridge volume Solder spot.
  • The neck green goes to the neck volume push/pull middle-right lug, not to a casing; the switch's top-right lug grounds it. The bottom two lugs are jumpered.
  • The bridge volume's input comes from the neck volume push/pull top-left lug, not straight from the pickup.
  • The master tone's left lug takes its signal from the toggle's middle (output) lug; its right lug is left unconnected. Each volume's right lug is bent onto its casing.
  • The toggle's ground lug runs to the bridge volume Solder spot; the bridge ground wire ends on the neck volume Solder spot.
  • Solder = location for ground (earth) connections.
  • The toggle lugs and the push/pull lugs 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.

#FromToHow
1Neck greenNeck volume push/pull middle-right lugWiregreen
2Neck bareNeck volume casingRuns round the top right to the neck volume Solder spot.Shield or groundbare
3Bridge greenBridge volume push/pull middle-right lugHops one wire.Wiregreen
4Bridge bareBridge volume casingShield or groundbare
5.047 capMaster tone casingTo a pot casing
6Bridge volume push/pull bottom-left lugBridge volume casingThe X arm's line carries on to the Solder spot.To a pot casingblack
7Bridge volume right lugBridge volume casingLug bent onto the casing.To a pot casing
8Neck volume push/pull top-right lugNeck volume casingHops the neck green.To a pot casingblack
9Neck volume right lugNeck volume casingLug bent onto the casing.To a pot casing
10Neck volume casingJack sleeveWireblack
11Bridge ground wireNeck volume casingWireblack
12Toggle frame ground lugBridge volume casingOne hop.Wireblack
13Master tone casingBridge volume casingADDED, not drawn on this sheet: grounds the master tone casing ('All pot casings MUST be grounded'; drawn on the sibling sheet 2H_3B_2VppSPppPH_1TppSPL).To a pot casingblack
14Bridge volume casingNeck volume casingADDED, not drawn on this sheet: joins the bridge volume ground group to the neck volume and jack sleeve ('All pot casings MUST be grounded'; drawn on the sibling sheet 2H_3B_2VppSPppPH_1TppSPL).To a pot casingblack
15Master tone left lugToggle middle lugHops the toggle ground wire.Wireblack
16Bridge volume middle lugToggle top lugHops one wire.Wireblack
17Neck volume middle lugToggle bottom lugHops one wire.Wireblack
18Toggle middle lugJack tipTwo hops.Wireblack
19Neck blackNeck volume left lugWireblack
20Neck whiteMaster tone push/pull middle-right lugWirewhite
21Neck redMaster tone push/pull middle-right lugShares the lug with the neck white.Wirered
22Bridge blackBridge volume push/pull middle-left lugWireblack
23Bridge whiteMaster tone push/pull middle-left lugWirewhite
24Bridge redMaster tone push/pull middle-left lugShares the lug with the bridge white.Wirered
25Master tone push/pull bottom-left lugBridge volume push/pull middle-left lugHops the bridge green.Wireblack
26Master tone push/pull bottom-right lugNeck volume push/pull middle-right lugHops two wires.Wireblack
27Master tone middle lug.047 capWire
28Bridge volume push/pull top-left lugNeck volume push/pull middle-left lugArcs up, hops the bridge green.Wireblack
29Bridge volume push/pull top-left lugBridge volume push/pull bottom-right lugOne arm of the X.Wireblack
30Bridge volume push/pull top-right lugBridge volume push/pull bottom-left lugOther arm of the X.Wireblack
31Neck volume push/pull top-left lugBridge volume left lugHops two wires.Wireblack
32Neck volume push/pull bottom-left lugNeck volume push/pull bottom-right lugJumper across the row nearest the pot.Jumperblack

What each position does

SettingThe sourceEngine result
Neck; neck vol down, bridge vol down, tone down—Neck pickup (both coils).
Both; neck vol down, bridge vol down, tone downRelies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output.Neck pickup (both coils) and Bridge pickup (both coils) in parallel.
Bridge; neck vol down, bridge vol down, tone downRelies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output.Bridge pickup (both coils).
Neck; neck vol down, bridge vol down, tone pulledMaster tone pulled (coil split): both humbuckers split.Neck pickup (split to one coil).
Both; neck vol down, bridge vol down, tone pulledMaster tone pulled (coil split): both humbuckers split. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output.Neck pickup (split to one coil) and Bridge pickup (split to one coil) in parallel.
Bridge; neck vol down, bridge vol down, tone pulledMaster tone pulled (coil split): both humbuckers split. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output.Bridge pickup (split to one coil).
Neck; neck vol down, bridge vol pulled, tone down—Neck pickup (both coils).
Both; neck vol down, bridge vol pulled, tone downBridge volume pulled (phase): the bridge pickup's phase is reversed. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output.Neck pickup (both coils) and Bridge pickup (both coils) in parallel.
Bridge; neck vol down, bridge vol pulled, tone downRelies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output.Bridge pickup (both coils).
Neck; neck vol down, bridge vol pulled, tone pulledMaster tone pulled (coil split): both humbuckers split.Neck pickup (split to one coil).
Both; neck vol down, bridge vol pulled, tone pulledBridge volume pulled (phase): the bridge pickup's phase is reversed. Master tone pulled (coil split): both humbuckers split. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output.Neck pickup (split to one coil) and Bridge pickup (split to one coil) in parallel.
Bridge; neck vol down, bridge vol pulled, tone pulledMaster tone pulled (coil split): both humbuckers split. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output.Bridge pickup (split to one coil).
Neck; neck vol pulled, bridge vol down, tone downNeck volume pulled (series/parallel): the neck green feeds the bridge pickup, so both play in series through the neck volume. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output.Neck pickup (both coils) and Bridge pickup (both coils) in series.
Both; neck vol pulled, bridge vol down, tone downNeck volume pulled (series/parallel): the neck green feeds the bridge pickup, so both play in series through the neck volume. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output.Neck pickup (both coils) and Bridge pickup (both coils) in series.
Bridge; neck vol pulled, bridge vol down, tone downNeck volume pulled (series/parallel): the bridge volume is cut off from the bridge pickup, so the bridge position is silent.No pickup reaches the output.
Neck; neck vol pulled, bridge vol down, tone pulledNeck volume pulled (series/parallel): the neck green feeds the bridge pickup, so both play in series through the neck volume. Master tone pulled (coil split): both humbuckers split. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output.Neck pickup (split to one coil) and Bridge pickup (split to one coil) in series.
Both; neck vol pulled, bridge vol down, tone pulledNeck volume pulled (series/parallel): the neck green feeds the bridge pickup, so both play in series through the neck volume. Master tone pulled (coil split): both humbuckers split. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output.Neck pickup (split to one coil) and Bridge pickup (split to one coil) in series.
Bridge; neck vol pulled, bridge vol down, tone pulledNeck volume pulled (series/parallel): the bridge volume is cut off from the bridge pickup, so the bridge position is silent.No pickup reaches the output.
Neck; neck vol pulled, bridge vol pulled, tone downNeck volume pulled (series/parallel): the neck green feeds the bridge pickup, so both play in series through the neck volume. Bridge volume pulled (phase): the bridge pickup's phase is reversed. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output.Neck pickup (both coils) and Bridge pickup (both coils) in series.
Both; neck vol pulled, bridge vol pulled, tone downNeck volume pulled (series/parallel): the neck green feeds the bridge pickup, so both play in series through the neck volume. Bridge volume pulled (phase): the bridge pickup's phase is reversed. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output.Neck pickup (both coils) and Bridge pickup (both coils) in series.
Bridge; neck vol pulled, bridge vol pulled, tone downNeck volume pulled (series/parallel): the bridge volume is cut off from the bridge pickup, so the bridge position is silent.No pickup reaches the output.
Neck; neck vol pulled, bridge vol pulled, tone pulledNeck volume pulled (series/parallel): the neck green feeds the bridge pickup, so both play in series through the neck volume. Bridge volume pulled (phase): the bridge pickup's phase is reversed. Master tone pulled (coil split): both humbuckers split. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output.Neck pickup (split to one coil) and Bridge pickup (split to one coil) in series.
Both; neck vol pulled, bridge vol pulled, tone pulledNeck volume pulled (series/parallel): the neck green feeds the bridge pickup, so both play in series through the neck volume. Bridge volume pulled (phase): the bridge pickup's phase is reversed. Master tone pulled (coil split): both humbuckers split. Relies on the two casing ground wires this diagram adds (not drawn on the sheet); as printed, the bridge pickup never reaches the output.Neck pickup (split to one coil) and Bridge pickup (split to one coil) in series.
Bridge; neck vol pulled, bridge vol pulled, tone pulledNeck volume pulled (series/parallel): the bridge volume is cut off from the bridge pickup, so the bridge position is silent.No pickup reaches the output.

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

  • Two casing ground wires (master tone to bridge volume, bridge volume to neck volume) are not drawn on the sheet and were added from its printed note '**All pot casings MUST be grounded**' and the sibling sheet 2H_3B_2VppSPppPH_1TppSPL. The analysed results depend on them.
  • 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 does what; this follows the usual push/pull behaviour (pulled joins the middle lugs to the lugs nearest the pot), which gives the titled function for every switch.
  • The silent bridge position with the series/parallel knob pulled follows from the drawn wiring; the sheet does not mention it.

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

  • Before powering up, meter between the three pot casings and the jack sleeve: all should read as a short once the two added ground wires are in.
  • All knobs down: the toggle gives neck, both in parallel, and bridge.
  • Pull the neck volume: the neck and both positions read the two humbuckers in series; the bridge position goes silent.
  • Pull the bridge volume with the toggle in the middle: the pickups play out of phase.
  • Pull the tone: each humbucker reads roughly one coil.

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.