Seymour Duncan wiring

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

Two humbuckers · Three-way blade · 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 blade, 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.

Two humbuckers with a three-way blade and two push/pull split volumesTwo humbuckers with a three-way blade and two push/pull split volumes: Two humbuckers · Three-way blade · Two push/pull volumes (one split per pickup). Original Tinkercaster drawing with labelled terminals.Neck PickupNeck PickupBridge PickupBridge Pickup3-Way Blade SwitchNeck Volume 500k push/pull · 500k500kBridge Volume 500k push/pull · 500k500kOutput JackBridge groundblackgreenwhiteredbareblackgreenwhiteredbareT1T2T3T4T5T6T7T8lug1lug2lug3sw1sw2sw3sw4sw5sw6lug1lug2lug3sw1sw2sw3sw4sw5sw6tipsleeveground

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 (unlabelled, marked Seymour Duncan)—CRL 3-Way BladeExample part
Neck Volume 500k push/pull500k500k Push-Pull DPDTExample part
Bridge Volume 500k push/pull500k500k Push-Pull DPDTExample part
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 titles the volumes as push/pull coil split.
  • On each pickup, the red and white leads are soldered together onto the middle lug of the switch's bottom row, not taped off.
  • The bottom-row lug nearest the pot has a short wire to that pot's lower solder spot; the pickup's green and bare leads end on the same solder spot. The other switch lugs are drawn empty.
  • Each volume's middle lug runs to a blade common: neck to the first lug of the right row, bridge to the fourth lug of the left row.
  • Three short jumpers join the first and second left blade lugs and the third and fourth right blade lugs; the fourth right lug runs to the jack tip.
  • A wire runs from the neck volume's lower solder spot to the bridge volume's lower solder spot; the bridge ground wire and the jack sleeve also end there.
  • The neck volume's blade wire carries a hop over the neck black lead; the bridge black lead carries a hop over the bridge volume's blade wire and over the ground wire between the pots.
  • Solder = location for ground (earth) connections.
  • The blade 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.

#FromToHow
1Neck greenNeck volume casingEnds on the lower solder spot.Wiregreen
2Neck bare shieldNeck volume casingDrawn grey beside the green.Shield or groundbare
3Neck split switch lug nearest the potNeck volume casingShort wire to the lower solder spot.To a pot casingblack
4Neck volume top lugNeck volume casingUnder the upper solder spot.To a pot casing
5Bridge greenBridge volume casingEnds on the lower solder spot.Wiregreen
6Bridge bare shieldBridge volume casingDrawn grey beside the green.Shield or groundbare
7Bridge split switch lug nearest the potBridge volume casingShort wire to the lower solder spot.To a pot casingblack
8Bridge volume top lugBridge volume casingUnder the upper solder spot.To a pot casing
9Neck volume casingBridge volume casingRuns from the neck lower solder spot down to the bridge lower solder spot.To a pot casingblack
10Bridge ground wireBridge volume casingWireblack
11Bridge volume casingJack sleeveWireblack
12Neck volume middle lugBlade neck commonCarries a hop over the neck black lead.Wireblack
13Bridge volume middle lugBlade bridge commonWireblack
14Blade left row, first lugBlade left row, second lugWireblack
15Blade left row, second lugBlade right row, third lugDrawn diagonally across the blade.Wireblack
16Blade right row, third lugBlade right row, fourth lugWireblack
17Blade right row, fourth lugJack tipWireblack
18Neck redNeck split switch middle lugWirered
19Neck whiteNeck split switch middle lugShares the lug with the neck red.Wirewhite
20Neck blackNeck volume bottom lug (input)Wireblack
21Bridge redBridge split switch middle lugWirered
22Bridge whiteBridge split switch middle lugShares the lug with the bridge red.Wirewhite
23Bridge blackBridge volume bottom lug (input)Carries hops over the ground wire between the pots and over the bridge volume's blade wire.Wireblack

What each position does

SettingThe sourceEngine result
Neck, both knobs down—Neck Pickup (both coils).
Both, both knobs down—Neck Pickup (both coils) and Bridge Pickup (both coils) in parallel.
Bridge, both knobs down—Bridge Pickup (both coils).
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 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, both knobs pulledPulling a volume splits that pickup.Neck Pickup (split to one coil).
Both, both knobs pulledPulling a volume splits that pickup.Neck Pickup (split to one coil) and Bridge Pickup (split to one coil) in parallel.
Bridge, both knobs 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 blade 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 blade common 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.