Parts and values
| In the drawing | Value | Part |
|---|---|---|
| '57 P BassSource: '57 P Bass (white, black) | — | Single-coil pickup (two-conductor)Generic |
| Volume 250k | 250k | CTS 250k Audio PotExample part |
| Tone 250k | 250k | CTS 250k Audio PotExample part |
| .1μfSource: .1μf capacitor (drawn orange) | 100nF | 0.1 µF Film CapacitorExample part |
| Output jackSource: Output Jack | — | Switchcraft #11Example part |
| Bridge groundSource: From Bridge Ground | — | 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 P-Bass white lead goes to the volume's left lug; its black lead goes to the solder spot on the volume casing.
- The volume's right lug is bent onto the casing.
- The tone is drawn with its lugs up. The volume's left lug jumps to the tone's left lug; the .1μf capacitor sits on the tone's middle lug with its other leg on the tone casing.
- The wire labelled From Bridge Ground and the jack sleeve both end on the tone casing, which is linked to the volume casing.
- The jack lugs are not labelled in the source: the lug fed from the volume's middle lug is the tip and the lug wired to the tone casing is the sleeve.
Connections
In soldering order: grounds first, then the switch, the pickups and the signal path.
| # | From | To | How |
|---|---|---|---|
| 1 | P-Bass black | Volume casing | To a pot casingblack |
| 2 | Volume right lug | Volume casingShort black link. | To a pot casing |
| 3 | .1μf capacitor | Tone casing | To a pot casing |
| 4 | Tone casing | Volume casing | To a pot casing |
| 5 | Tone casing | Jack sleeve | Wire |
| 6 | From Bridge Ground | Tone casing | Shield or ground |
| 7 | P-Bass white | Volume left lug (input) | Wirewhite |
| 8 | Volume middle lug | Jack tip | Wire |
| 9 | Volume left lug | Tone left lug | Wire |
| 10 | Tone middle lug | .1μf capacitor | Wire |
What each position does
| Setting | The source | Engine result |
|---|---|---|
| Always on | One P-Bass, no selector. | '57 P Bass. |
Checked with the Tinkercaster wiring engine against the switching the source describes.
- The P-Bass is modelled as a generic single coil; the split-coil/hum-cancelling construction is not modelled.
- Pickup resistance is not specified, so no numeric meter readings are given.
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
- With both pots up, the meter across the jack should read the P-Bass resistance.
- The jack sleeve should read continuity to the tone casing, the volume casing and the bridge ground wire.
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.