Parts and values
| In the drawing | Value | Part |
|---|---|---|
| Neck Blackout | — | Blackouts Active HumbuckerGeneric |
| Bridge Blackout | — | Blackouts Active HumbuckerGeneric |
| Neck volume 25K | 25k | EMG 25K PotExample part |
| Bridge volume 25K | 25k | EMG 25K PotExample part |
| 3-way toggle | — | Switchcraft 3-Way ToggleExample part |
| Stereo output jack | — | Switchcraft #12BExample part |
| 9V battery clip | — | 9V Battery ClipExample part |
| Bridge ground | — | Bridge ground wireGeneric |
| Master tone 25K | 25k | EMG 25K PotExample part |
| .047 cap | 47nF | Orange Drop .047µFExample part |
“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
- Toggle output runs through the master tone before the jack tip as drawn.
- Both pickup red leads share the battery positive junction.
Understand this wiring
- Seymour Duncan humbucker wire colors
See the pickup, recognise its two halves, and learn where each coloured wire goes.
Connections
In soldering order: grounds first, then the switch, the pickups and the signal path.
| # | From | To | How |
|---|---|---|---|
| 1 | Neck Blackout gnd | Neck volume 25K casing | Wirebare |
| 2 | Bridge Blackout gnd | Bridge volume 25K casing | Wirebare |
| 3 | 3-way toggle T4 | Bridge volume 25K casing | Wireblack |
| 4 | Neck volume 25K lug1 | Neck volume 25K casing | Wireground |
| 5 | Bridge volume 25K lug1 | Bridge volume 25K casing | Wireground |
| 6 | Neck volume 25K casing | Bridge volume 25K casing | Wireground |
| 7 | .047 cap b | Master tone 25K casing | Wireground |
| 8 | Master tone 25K casing | Neck volume 25K casing | Wireground |
| 9 | Neck volume 25K casing | Stereo output jack sleeve | Wireblack |
| 10 | Bridge ground ground | Master tone 25K casing | Wireblack |
| 11 | Neck volume 25K lug2 | 3-way toggle T1 | Wireblack |
| 12 | Bridge volume 25K lug2 | 3-way toggle T2 | Wireblack |
| 13 | 3-way toggle T3 | Master tone 25K lug3 | Wireblack |
| 14 | Neck Blackout hot | Neck volume 25K lug3 | Wirewhite |
| 15 | Bridge Blackout hot | Bridge volume 25K lug3 | Wirewhite |
| 16 | Neck Blackout vplus | 9V battery clip vplus | Wirered |
| 17 | Bridge Blackout vplus | 9V battery clip vplus | Wirered |
| 18 | 9V battery clip vminus | Stereo output jack ring | Wireblack |
| 19 | Master tone 25K lug2 | Stereo output jack tip | Wireblack |
| 20 | Master tone 25K lug1 | .047 cap a | Wireblack |
What each position does
| Setting | The source | Engine result |
|---|---|---|
| Always on (active) | Passive simulation is not applied to active pickups; wiring topology only. | No pickup reaches the output. |
Not simulated: this circuit is drawn for reference only.
- Active pickup gain and frequency response are not simulated.
- The catalog active buffer is approximated with seymour-duncan-blackout-humbucker terminals.
- Passive engine rules not verified (volumeMutes); wiring topology matches the manufacturer diagram.
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
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.