Les Paul Wiring Harness Custom by JEL - 525k CTS LONG Shaft - PIO Vitamin Q .022 uF Caps

8 Day Build and Test Time
Minimum Purchase:
1 unit

Jackson Electronic  Luthier ®

525k ohm Ω LONG Shaft

Note: Does not come with 3-way switch or jack

Les Paul ® Type Wiring Harness 50s Style Wiring Harness

Rare Sprague Vitamin Q PIO .022uF Caps

CTS TAOT 525k Short Shaft Audio Pots.

Amber Varnish Spaghetti Tubing



These Caps are the Masterpiece of Sprague and in the Lineage from the Bumblebee. I have them in my ES-335. The tones are unbelievable. This is a Harness for the Very Serious Guitar Player who is a Tone Chaser.

All Materials assembled as 50s Wiring 50s Volume.

Sprague Vitamin Q's are among the highest quality PIO "Paper in Oil"capacitors around. Hermetically sealed metal body with glass ends. The oil used by Sprague in Vitamin Q's is a proprietary blend that makes it unique among paper in oil caps. .022 uF is common value in Gibson® and Gibson ® -style guitars using Humbucker pickups. Highly sought after and increasingly hard to find.

All Harnesses come signed with Individual Serial Number.








Wired with 20 AWG Bus Wire

Comes with Instructions

Build is a 5% Tolerance Build which produces a Superior Tone  than a 10% build tolerance.

If you’re in doubt ask the Harness Maker what their Tolerances are and can you see their test reports.

Many Builds are 10% Tolerance and some are even 20% Tolerance.


CTS 525k TAOT Potentiometers and Vitamin Q PIO Capacitors, as well as all materials used, Comes With Complete Test Reports and Specifications and Instructions.

The Capacitors are 0.022uF at the neck and .022uf at the bridge.

The Harness is Tested Using Advanced Audio-Metric Software feed to an AC30 HW Vox Amp. 

Many Harness Makers only Tested for Continuity.

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