# Humbucker, Phat Cat and humbucker with five-way rotary, Treble/Rhythm toggle, volume and tone Canonical page: https://guitarwiring.app/wiring-diagrams/seymour-duncan/humbucker-phat-cat-humbucker-five-way-rotary-toggle-volume-tone Neck + bridge humbuckers, Phat Cat middle · 3-way toggle (Treble/Rhythm) · 5-way rotary · 500K volume · 500K tone (.047) A Jazz neck humbucker and JB bridge humbucker feed the toggle's Treble side through a two-deck five-way rotary that picks bridge, bridge split, both humbuckers, neck split or neck; the Phat Cat middle pickup sits alone on the Rhythm side. One 500K volume, one 500K tone with a .047 cap and a mono jack. Drawing: https://guitarwiring.app/wiring-diagrams/seymour-duncan/humbucker-phat-cat-humbucker-five-way-rotary-toggle-volume-tone.svg (schematic) ## Parts and values - Jazz (Neck): Jazz (Neck); compatible example (Humbucker (four-conductor, Seymour Duncan colours)) - Phat Cat (Middle): PhatCat (Middle); compatible example (Single-coil pickup (two-conductor)) - JB (Bridge): JB (Bridge); compatible example (Humbucker (four-conductor, Seymour Duncan colours)) - 5-Way Rotary Switch: 5-Way Rotary Switch; generic (Rotary Switch (2-pole, 5-position)) - 3-Way Toggle Switch: 3-Way Toggle Switch; compatible example (Switchcraft 3-Way Toggle) - Volume Pot 500K Audio Taper: Volume Pot 500K Audio Taper; 500k; compatible example (CTS 500k Audio Pot) - Tone Pot 500K Audio Taper: Tone Pot 500K Audio Taper; 500k; compatible example (CTS 500k Audio Pot) - .047 cap: .047; 47nF; compatible example (Orange Drop .047µF) - Mono Output Jack: Mono Output Jack; compatible example (Switchcraft \#11) - Wire to bridge ground: wire to bridge ground; generic (Bridge ground wire) ## Specific to this wiring - Source legend: 'Rhythm: P-90'; 'Treble: 1. Bridge Humbucker 2. Bridge Single Coil 3. Bridge + Neck Humbuckers 4. Neck Single Coil 5. Neck Humbucker'. - Source pickup labels: 'Jazz (Neck)', 'PhatCat (Middle)', 'JB (Bridge)'. Pot labels: 'Volume Pot 500K Audio Taper', 'Tone Pot 500K Audio Taper'; the cap is printed '.047'. - The neck black lead joins the blue wire between the rotary and the Treble lug at a junction dot, so it is always on the Treble lug; the rotary turns the neck on and off by grounding its coils on the lower deck. - Each humbucker's red and white are soldered together on a lower-deck lug (bridge on lug 2, neck on lug 4); they are not taped off. - The rotary lugs are numbered 1 to 5 on each deck. The upper deck's common is the upper centre lug (blue wire to the toggle) and the lower deck's common is the lower centre lug (green wire to ground); upper lug n is mapped to T n, the upper centre to T6, lower lug n to T(6+n) and the lower centre to T12. - The toggle's two centre lugs are drawn together as its common; the lug beside 'Treble' is mapped to the treble tag and the lug beside 'Rhythm' to the rhythm tag. - The source marks grounds with ground symbols, and a black wire labelled 'wire to bridge ground' leaves the grey 'Solder' spot on the tone pot. - The humbucker bare leads, the toggle frame and the volume casing are not drawn connected to ground on the sheet. - The Phat Cat is drawn with one black lead plus a braided shield to ground. - The legend does not describe the toggle's middle position; the expected states for it follow from the drawn wiring. ## Connections 1. Jazz (Neck) green lead → 5-Way Rotary Switch lower deck lug 3 (wire, green) 2. JB (Bridge) green lead → Tone Pot 500K Audio Taper casing (Solder spot) (case, green) 3. 5-Way Rotary Switch lower centre lug (common) → Tone Pot 500K Audio Taper casing (Solder spot) (case, green) 4. Phat Cat (Middle) braided shield → Tone Pot 500K Audio Taper casing (Solder spot) (case, braided) 5. Volume Pot 500K Audio Taper left lug → Tone Pot 500K Audio Taper casing (Solder spot) (case, green) 6. Tone Pot 500K Audio Taper left lug → Tone Pot 500K Audio Taper casing (Solder spot) (case, green) 7. Mono Output Jack sleeve lug → Tone Pot 500K Audio Taper casing (Solder spot) (case, green) 8. Bridge ground → Tone Pot 500K Audio Taper casing (Solder spot) (case, black) 9. Jazz (Neck) black lead → 3-Way Toggle Switch Treble lug (wire, black): Joins the Treble wire at a drawn junction dot. 10. Jazz (Neck) white lead → 5-Way Rotary Switch lower deck lug 4 (wire, white) 11. Jazz (Neck) red lead → 5-Way Rotary Switch lower deck lug 4 (wire, red) 12. 5-Way Rotary Switch lower deck lug 5 → 5-Way Rotary Switch lower deck lug 3 (wire, green): Joins the neck green lead at a drawn junction dot. 13. JB (Bridge) black lead → 5-Way Rotary Switch upper deck lug 1 (wire, black) 14. 5-Way Rotary Switch upper deck lug 1 → 5-Way Rotary Switch upper deck lug 2 (wire, black): Drawn as a jumper. 15. 5-Way Rotary Switch upper deck lug 2 → 5-Way Rotary Switch upper deck lug 3 (wire, black): Drawn as a jumper. 16. JB (Bridge) white lead → 5-Way Rotary Switch lower deck lug 2 (wire, white) 17. JB (Bridge) red lead → 5-Way Rotary Switch lower deck lug 2 (wire, red) 18. 5-Way Rotary Switch upper centre lug (common) → 3-Way Toggle Switch Treble lug (wire, blue) 19. Phat Cat (Middle) black lead → 3-Way Toggle Switch Rhythm lug (wire, black) 20. 3-Way Toggle Switch centre (common) lugs → Volume Pot 500K Audio Taper right lug (wire, blue) 21. Volume Pot 500K Audio Taper middle lug → Mono Output Jack tip lug (wire, blue) 22. Volume Pot 500K Audio Taper right lug → .047 cap leg A (wire, black) 23. .047 cap leg B → Tone Pot 500K Audio Taper middle lug (wire, black) ## What each position does - Rhythm, rotary 1: Phat Cat: Phat Cat (Middle). Source: Legend: 'Rhythm: P-90'. - Rhythm, rotary 2: Phat Cat: Phat Cat (Middle). Source: Legend: 'Rhythm: P-90'. - Rhythm, rotary 3: Phat Cat: Phat Cat (Middle). Source: Legend: 'Rhythm: P-90'. - Rhythm, rotary 4: Phat Cat: Phat Cat (Middle). Source: Legend: 'Rhythm: P-90'. - Rhythm, rotary 5: Phat Cat: Phat Cat (Middle). Source: Legend: 'Rhythm: P-90'. - Both, rotary 1: Phat Cat + bridge humbucker: Phat Cat (Middle) and JB (Bridge) (both coils) in parallel. Source: Not in the legend; follows from the drawn toggle wiring. - Both, rotary 2: Phat Cat + bridge single coil: Phat Cat (Middle) and JB (Bridge) (split to one coil) in parallel. Source: Not in the legend; follows from the drawn toggle wiring. - Both, rotary 3: Phat Cat + bridge + neck humbuckers: Jazz (Neck) (both coils) and Phat Cat (Middle) and JB (Bridge) (both coils) in parallel. Source: Not in the legend; follows from the drawn toggle wiring. - Both, rotary 4: Phat Cat + neck single coil: Jazz (Neck) (split to one coil) and Phat Cat (Middle) in parallel. Source: Not in the legend; follows from the drawn toggle wiring. - Both, rotary 5: Phat Cat + neck humbucker: Jazz (Neck) (both coils) and Phat Cat (Middle) in parallel. Source: Not in the legend; follows from the drawn toggle wiring. - Treble, rotary 1: Bridge humbucker: JB (Bridge) (both coils). Source: Legend: '1. Bridge Humbucker'. - Treble, rotary 2: Bridge single coil: JB (Bridge) (split to one coil). Source: Legend: '2.Bridge Single Coil'. - Treble, rotary 3: Bridge + neck humbuckers: Jazz (Neck) (both coils) and JB (Bridge) (both coils) in parallel. Source: Legend: '3.Bridge + Neck Humbuckers'. - Treble, rotary 4: Neck single coil: Jazz (Neck) (split to one coil). Source: Legend: '4.Neck Single Coil'. - Treble, rotary 5: Neck humbucker: Jazz (Neck) (both coils). Source: Legend: '5.Neck Humbucker'. - The toggle is Treble/Rhythm rather than neck/bridge, so the selection check's slot roles do not apply (see ruleExceptions); the engine's pickups match the legend in all 15 toggle and rotary combinations. - The sheet draws no ground for the toggle frame, the volume casing or the humbucker bare leads, and none are added; the signal ground path is complete. Ground those points to the volume casing when building it, as on Seymour Duncan's other sheets. - The tone's cap sits on the tone wiper with the left lug grounded; the engine does not recognise this as a tone control, so tone behaviour is not simulated. - Hum cancelling and phase describe the generic stand-in pickups, not the Jazz, Phat Cat or JB. ## Check before plugging in - With the toggle on Treble and the rotary on 2, the bridge red/white joint should read continuity to ground. - With the toggle on Treble and the rotary on 4 or 5, the bridge black should read open to the jack tip. ## Source Tinkercaster's own drawing of the Seymour Duncan diagram 1H\_1PH\_1H\_5WR\_1V\_1T\_3G, revision 2. Not the manufacturer's artwork and not endorsed by Seymour Duncan. See also [all wiring diagrams]().