J-Bass Wiring Harness- VitaminQ SILVER FOIL

These aren’t your average bargain-bin electronics with cold solder joints and scratchy signals. Every CLE GUITAR WORKS harness is hand-built and road-tested using only premium components — because your tone deserves better, and cheap parts have no place between your pickups and your amp.

Each harness includes:

★ CTS POTENTIOMETERS for smooth, consistent control

★ SWITCHCRAFT SWITCHES and DUAL-CONTACT JACKS for rock-solid reliability

★ Hand-wired by yours truly — with over 20 YEARS of experience wiring and modding guitars for A-LIST ARTISTS around the world

★ Vintage-spec push-back wire

★ Or Pure 20 AWG 5N SILVER lead wire (Depending on the series), paired with 16 AWG ground bus wire — delivering a clean, stable, and transparent signal chain.

Also included:

★ JUPITER CONDENSER CO. CAPACITORS — premium, American-made caps trusted by even the most tone-obsessed audiophiles. They deliver the clarity and musicality your rig deserves, both in the STUDIO and ON STAGE.

Wiring is the unsung hero of your signal chain. It’s not flashy — but it’s the main artery that carries your tone from pickup to amp:

UNCOLORED. UNFILTERED. EXACTLY how it’s meant to sound.

DON’T LET WEAK PARTS CHOKE YOUR SIGNAL.

DON’T LET CHEAP WIRING FAIL YOU ON STAGE.

INVEST IN RELIABILITY. INVEST IN TONE.

J-Bass Pre-Wired Kit

(Vitamin Q Silver Foil Spec)

This is where clean low end meets studio-grade articulation.

Overkill? Possibly. But if you want more control, more character, and more clarity in your J-Bass tone — this harness delivers.

I built it to see what would happen when you pair Jupiter Condenser Co.’s PURE SILVER FOIL .022µF capacitor with 5N pure silver lead wire, CTS pots, and Switchcraft hardware in a traditional Jazz Bass layout.

The result? Fat, responsive lows with beautifully defined mids and treble — all without the dull blanket effect that can plague bass tone controls.

No marketing fluff. Just premium materials built for players who want that last 5% of tonal finesse.

★ What Sets It Apart

• Silver foil caps offer a level of refinement you don’t get with standard tone circuits. They deliver:

 – Smoother, more expressive tone roll-off

 – Clearer highs and enhanced midrange articulation

 – Greater harmonic detail and a more “open” top end

 – A subtle, musical feel — especially when blending with pedals or running clean

• Paired with a .022µF value, this harness gives Jazz Bass players a tighter, more controlled tone sweep compared to the usual .047µF setup. It dials back some of the excess mud while preserving the growl, warmth, and punch that define the J-Bass voice — just with added clarity and usable range.

★ Kit Specs

• Potentiometers: (3) CTS 250K Vintage-Style Solid Shaft, 3/8” Bushing Diameter with 1/4” Bushing Length, Audio Taper.

• Capacitor:

  – .022 µF Jupiter VitaminQ - PURE SILVER FOIL Paper-in-Oil Capacitors

Specifications:

Tolerance:  +/- 5%

Operating Temperature:  85°C

Voltage:  600VDC 

Pure Silver Foil

Dielectric:  Paper-in-Oil

Oil Type: Vitamin-Q

Leads:  Pure Silver Wire 5N

• Jack: Switchcraft Dual-Contact ¼” Mono Jack (Nickel)

• Wire: Pure 5N Silver 20AWG for all lead wiring

• Ground Bus: 16 AWG tinned copper

• Solder: Sn63/Pb37 rosin core for superior flow and strength

• Optional: Volume treble bleed circuit

★ Compatibility

Fits most USA Fender Jazz Bass models with standard control plates.

Also compatible with most Squier Jazz Bass models; however, factory components (typically Alpha-brand pots) use smaller metric-sized shafts and mounting holes, so careful reaming may be required to fit ⅜” CTS pots.

This harness is wired in the typical Precision Bass configuration — one master volume and one master tone.