Obsidian

ObsidianWire 8415394617 Vintage Plus Precision Bass Harness

4.4 (69 reviews)

Drop-in solder-less wiring harness with NOS Russian capacitor and Emerson Pro CTS pots for Precision Bass guitars.

$72.99*
In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The ObsidianWire Vintage Plus Wiring Harness is a complete electronics upgrade designed specifically for Fender Precision Bass and compatible Squier models. At its core are hand-matched Emerson Pro CTS 250K solid shaft potentiometers with audio taper, held to a tight ±6% tolerance that ensures smooth, predictable volume and tone response. The inclusion of a NOS Russian Cold War Era K42Y-2 paper-in-oil capacitor gives the tone circuit a warmer, fuller character that many players prefer over modern ceramic or film alternatives. A built-in premium treble bleed modification on the volume pot keeps the high end intact as you dial back, solving one of the most common complaints with passive bass electronics.

Installation is the harness's standout feature. ObsidianWire's proprietary Plug, Play & Enjoy connectors eliminate soldering entirely—players simply connect their pickups and output jack using the provided snap-in leads. The included Switchcraft J11 mono output jack handles the 1/4-inch TS connection with reliable, low-noise performance. While the solder-less system works seamlessly with ObsidianWire-compatible pickups, players using third-party pickups may need to solder adapter leads. Overall, this harness is aimed at bassists who want a meaningful tonal and functional upgrade without the complexity or risk of traditional rewiring.

Key Features

Solderless Wiring Harness Upgrade for Precision Bass

Hand Matched Emerson Pro CTS Solid Shaft Pots 250 k w/.250" (Audio taper) (+/-6%)

NOS Russian Cold War Era 0.047uf K42Y-2 PIO Capacitor

Premium Volume Mod / Treble Bleed

Wiring Diagram Included

Specifications

Compatibility
Fender Precision Bass; Squier Precision Bass (with adjustments)
Potentiometers
Hand Matched Emerson Pro CTS 250K Solid Shaft (Audio Taper, ±6%)
Capacitor
NOS Russian Cold War Era 0.047µF K42Y-2 PIO
Treble Bleed
Premium Volume Mod
Output Jack
Switchcraft J11 Mono
Connector Type
1/4" TS (Tip-Sleeve)
Installation
Solder-less (Obsidian Plug, Play & Enjoy connectors)

Pros & Cons

👍 Pros

  • Solder-less installation makes upgrading electronics accessible to players with no wiring experience.
  • Hand-matched Emerson Pro CTS pots provide tighter tolerance than stock potentiometers for consistent taper and feel.
  • NOS Russian paper-in-oil capacitor delivers a warmer, more musical tone compared to standard ceramic caps.
  • Integrated treble bleed mod preserves clarity at lower volume settings without requiring a separate modification.
  • Switchcraft J11 output jack is a proven, durable upgrade over many factory-installed jacks.

👎 Cons

  • Solid shaft pots may not fit pickguards or knobs designed for split-shaft potentiometers without adapter or knob replacement.
  • Limited to Precision Bass wiring configurations and cannot be used for Jazz Bass or other pickup layouts.
  • The solder-less connectors are proprietary, so swapping in third-party pickups may still require soldering to adapt leads.
  • Premium components place this harness at a higher price point than basic replacement wiring kits.

Frequently Asked Questions

No. The ObsidianWire Vintage Plus uses proprietary Plug, Play & Enjoy connectors that eliminate the need for soldering entirely.
Yes, though some adjustments may be needed. It is designed as a direct fit for Fender Precision Bass guitars.
It includes a NOS (New Old Stock) Russian Cold War Era 0.047uf K42Y-2 paper-in-oil capacitor, valued for its warm tonal characteristics.
The premium treble bleed mod preserves high-frequency clarity as you roll down the volume, preventing the muddy tone rolloff common with standard wiring.
The harness comes with a Switchcraft J11 mono jack, an industry-standard connector known for durability and reliable signal transfer.