Seymour Duncan wiring

Two humbuckers with a three-way blade, a push/pull split volume and two tones

Two humbuckers · Three-way blade · Push/pull volume (splits both) · Two tones

Neck and bridge Seymour Duncan humbuckers selected by a three-way blade into one 500k push/pull volume. Each pickup has its own 500k tone with a .047 µF capacitor on the pickup's hot lead before the switch. The volume's push/pull splits both pickups at once by grounding each pickup's red–white link.

Two humbuckers with a three-way blade, a push/pull split volume and two tonesTwo humbuckers with a three-way blade, a push/pull split volume and two tones: Two humbuckers · Three-way blade · Push/pull volume (splits both) · Two tones. Original Tinkercaster drawing with labelled terminals.Neck pickupNeck pickupBridge pickupBridge pickup3-Way Blade SwitchMaster volume 500k push/pull · 500k500kNeck tone 500k · 500k500k.047 cap (neck) · 47nF47nFBridge tone 500k · 500k500k.047 cap (bridge) · 47nF47nFOutput JackBridge ground wireblackgreenwhiteredbareblackgreenwhiteredbareT1T2T3T4T5T6T7T8lug1lug2lug3sw1sw2sw3sw4sw5sw6lug1lug2lug3ablug1lug2lug3abtipsleeveground

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 Blade SwitchSource: 3 Way Blade—CRL 3-Way BladeExample part
Master volume 500k push/pullSource: Volume 500k with Split Switch500k500k Push-Pull DPDTExample part
Neck tone 500kSource: Neck Tone 500k500kCTS 500k Audio PotExample part
.047 cap (neck)Source: .047 cap (neck tone)47nFOrange Drop .047µFExample part
Bridge tone 500kSource: Bridge Tone 500k500kCTS 500k Audio PotExample part
.047 cap (bridge)Source: .047 cap (bridge tone)47nFOrange Drop .047µFExample part
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

  • The source titles the volume's push/pull as a coil split switch that splits both pickups.
  • Each pickup's red and white leads are soldered together onto a middle lug of the push/pull switch: bridge on the left, neck on the right.
  • The two push/pull lugs nearest the pot are jumpered together and wired to the volume casing; the two lugs furthest from the pot stay empty.
  • Each pickup's black lead goes to a lug on its own tone pot, and that lug runs on to a common lug on the blade, so each tone only works on its own pickup.
  • Each .047 cap sits between its tone's middle lug and that tone's casing.
  • Three short jumpers join four blade lugs into one output that loops round to the volume's input lug.
  • The neck green and bare end on the neck tone casing; the bridge green and bare end on the volume casing.
  • The bridge ground wire ends on the neck tone casing; the jack sleeve ends on the bridge tone casing.
  • Solder = location for ground (earth) connections.
  • The source does not number the blade 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.

#FromToHow
1Neck greenNeck tone casingTo a pot casinggreen
2Neck bareNeck tone casingDrawn grey beside the green.Shield or groundbare
3Bridge greenVolume casingTo a pot casinggreen
4Bridge bareVolume casingDrawn grey beside the green.Shield or groundbare
5Push/pull bottom left lugVolume casingTo a pot casingblack
6Volume right lugVolume casingLug bent onto the lower solder spot.To a pot casing
7Neck .047 capNeck tone casingTo a pot casingblack
8Bridge .047 capBridge tone casingTo a pot casingblack
9Neck tone casingVolume casingTo a pot casingblack
10Bridge ground wireNeck tone casingShield or groundblack
11Volume casingBridge tone casingHops over the two long wires from the bridge cable; they do not connect.To a pot casingblack
12Bridge tone casingJack sleeveCrosses the tip wire above the jack; they do not connect.Wireblack
13Neck tone top lugBlade top row, first lug (common)The wire loops up over the blade to its top-right lug.Wireblack
14Bridge tone top lugBlade bottom row, fourth lug (common)Wireblack
15Blade bottom row, first lugBlade bottom row, second lugJumperblack
16Blade bottom row, second lugBlade top row, third lugJumperblack
17Blade top row, third lugBlade top row, fourth lugJumperblack
18Blade top row, fourth lugVolume left lug (input)Hops over the wire from the left column's bottom lug; they do not connect.Wireblack
19Neck whitePush/pull middle right lugWirewhite
20Neck redPush/pull middle right lugShares the lug with the neck white lead.Wirered
21Neck blackNeck tone top lugWireblack
22Bridge whitePush/pull middle left lugWirewhite
23Bridge redPush/pull middle left lugShares the lug with the bridge white lead.Wirered
24Bridge blackBridge tone top lugWireblack
25Push/pull bottom left lugPush/pull bottom right lugJumperblack
26Volume middle lugJack tipHops over both long wires from the bridge cable; they do not connect.Wireblack
27Neck tone middle lugNeck .047 capThe cap is drawn on the back of the neck tone.Wireblack
28Bridge tone middle lugBridge .047 capThe cap is drawn on the back of the bridge tone.Wireblack

What each position does

SettingThe sourceEngine result
Neck, knob down: full humbuckerOnly the neck tone acts.Neck pickup (both coils).
Neck + bridge, knob down: both humbuckersBoth tones act, each on its own pickup's lead.Neck pickup (both coils) and Bridge pickup (both coils) in parallel.
Bridge, knob down: full humbuckerOnly the bridge tone acts.Bridge pickup (both coils).
Neck, knob pulled: single coilThe split switch splits both pickups.Neck pickup (split to one coil).
Neck + bridge, knob pulled: both splitThe split switch splits both pickups.Neck pickup (split to one coil) and Bridge pickup (split to one coil) in parallel.
Bridge, knob pulled: single coilThe split switch 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).
  • The simulator reports one tone control per position; the second tone is wired the same way on the other pickup.

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 humbucker, or both in parallel in the middle.
  • Knob up: each reading drops to roughly one coil's resistance.
  • Each tone only loads its own pickup's lead.
  • 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.