Two wiring modes, one pull of a knob. The Sonic Pickups J Bass Pre-Wired Harness with Series/Parallel Push Pull lets you switch your Jazz Bass pickups between standard parallel wiring and a thick, powerful series mode — giving you a dramatically different voice without touching your guitar body.
What's Inside
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Bourns 250k solid short-shaft pots (x2) — smooth, consistent volume taper
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Bourns 250k solid DPDT push/pull pot (x1) — switches between series and parallel with a simple pull
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SoZo NexGen Mustard Vintage .047µF capacitor (x1) — warm, vintage-voiced tone rolloff
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Switchcraft #11 mono jack (x1) — bulletproof output, made in the USA
or
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Pure Tone mono jack (x1) — multi-contact design for a more secure cable connection
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Gavitt cloth pushback wire in black & white — period-correct and flexible
Series vs. Parallel
Parallel (pot down): Standard Jazz Bass tone — clear, articulate, and balanced.
Series (pot up): Both pickups wired in series — louder, thicker, and more mid-forward with a P Bass-like punch.
Compatibility
Fits standard Jazz Bass body routes. Designed for USA-spec pot holes (3/8"). Basses manufactured outside the US may require drilling pot holes to 3/8" to fit. Works with standard USA-sized knobs. Select your output jack preference and include your bass's make, model, country of manufacture, and handedness in your order notes so we can confirm fit before shipping.
Drop-In Installation
No point-to-point soldering required. Simply connect your pickups and output jack — most players complete the install in under 30 minutes. View Wiring Diagram.
Handcrafted by Sonic Pickups in the USA.
