Prewired Concentric Jazz Bass Harness

Total Control.

$115

(14)

Our Lindy Fralin Prewired Jazz Bass Harness with Concentric Knobs provides the best materials and quality possible, at an affordable price. Featuring USA-Made materials and precision wiring, our Prewired Jazz Bass Harness is rock solid and incredibly easy to install! This model features Concentric Knobs for even more control.

Available! Estimated Lead Time: 2-3 Weeks

Neck Tone Cap *

New for 2026: We’re including our upgraded cap, no charge. Choose what Tone Cap you would like installed on the Neck Pickup. 0.02mfd is the recommended value for most pickup setups. Choose a higher value for a darker tone.

Bridge Tone Cap *

Choose what Tone Cap you would like installed on the Neck Pickup. 0.02mfd is the recommended value for most pickup setups. Choose a higher value for a darker tone.

Add Knobs

Complete your look and add your choice of metal knobs. Note: The chrome control plate is not included with purchase. We cannot source control plates that meet our quality threshold.

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Want to learn more about our Prewired Concentric Jazz Bass Harness? Here's all the information you'll need:

Features

Based on our best-selling Prewired Jazz Bass Harness, we wanted to offer more options, including one with Concentric Pots! Introducing the brand-new Prewired Concentric Jazz Bass Harness by Fralin Pickups: USA-Made quality, CTS® Pots, the rock-solid PureTone Output Jack, all beautifully wired and ready to install in a few minutes.

  • Optional USA-Made knobs, with a Chrome finish
  • CTS® Concentric 250K / 500K Audio Taper Pots for a smooth operation
  • Modified Jazz Bass wiring, with Concentric Pots for infinite tonal options
  • Wide assortment of Tone Caps available to fine-tune your tone
  • Incredibly simple installation involves soldering only 4 wires

Installation Instructions

This installation guide covers the Concentric Jazz Bass Wiring Harness, with Concentric Pots and an Output Jack. If you ordered the Standard Harness, that installation guide is located here.

Tools Needed

  • Soldering Iron and Solder (we use Kester 60/40)
  • Screwdriver (for removing and installing control plate)
  • 1/2" Hex Nut Driver (For removal or installation of the pots, if you are transferring the harness to an existing control plate.

Installation

Installation is very simple and should only take a few minutes.

  • Remove your existing harness by unscrewing the three screws on the control plate
  • Unsolder each pickup Hot wire and Ground, label them if need be
  • If you purchased the Harness without the control plate and knobs, transfer your existing control plate and knobs using a 1/2" hex nut driver to unbolt the pots from the harness and transfer them to the existing control plate.
  • Resolder the pickup's leads following these instructions:
Jazz Bass Concentric Pots Installation Instructions

Pickup Dimensions

Important Note:
While we design these pickup dimensions as accurately as possible, they are not meant for routing templates.
Prewired Jazz Bass Control Plate Dimensions

Need Guidance?

Contact our Prewired Craftsman Directly


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Customer Reviews

14 Genuine Reviews for Prewired Concentric Jazz Bass Harness

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  1. Mario Bucco

    I ordered a set of the split jazz pickups with a 5% overwind and the concentric volume/tone control plate with the 0.02 mfd Fralin Mustard Caps for a fretless jazz build and recently completed the bass. The split jazz sound great, no hum and great output. I’m able to dial in just the sound I wanted. The concentric control plate is perfect for my needs. I love the ability to adjust each pickups volume and tone independently. Thanks guys, I will certainly look to you for my next build.

  2. vwverno57

    Have purchased several products from Lindy to upgrade my bass guitars, including pick-ups and the stacked knob control plate. Couldn’t be more pleased.. Customer service is both detailed and personal from the entire staff.
    Will continue to use his products as was as all the great educational information on the website.
    Thank you so much.

  3. Mick

    I use these stacked knobs on all my jazz and PJ basses! Unlimited tonal possibilities! You can’t go wrong! Top quality stuff!

  4. Mick

    I use these stacked knobs on all my jazz and PJ basses! Unlimited tonal possibilities! You can’t go wrong!

  5. Ray

    They said four weeks, and it arrived in less than two. Never owned a bass with separate volume and tone controls. I thought it was time to try one. How nice. The increased versatility and available tone colors are wonderful. Ordered it with a 0.05 mfd capacitor for the neck (also bought a 0.02 mfd if it turns out to get too dark) and a 0.02 mfd for the bridge, and a Pure Tone jack. With Fralin 5% overwind split coil pickups, this Jazz is incredibly versatile, quiet, and covers a vast landscape of expressive possibilities. Thank you, Lindy, Jenny (for helping with a change after ordering), and everyone else.

  6. Falk

    Großartiges Teil. Top verarbeitet. Sehr schön. Sehr wertig. Vielen Dank, daß ich es kaufen durfte. Grüße aus Berlin. :o)

  7. Øyvind Halvorsen

    Made my active Sire JB passive with this beautifully made control plate. Adding a set of flatwounds and it transformed my bass into the vintage funk machine of my dreams.

  8. Chris Bold

    Perfect fit & finish – nothing short of what was expected. In regards to the sound quality: A+ Very cool vintage voiced in my opinion, clean but also with a hint of dirt when pushing it. All expectations met. I’ve installed this in a anniversary Japan spec. Jazz bass – with a 3 wire pickup configuration – so I had to reach out to support. Reply & help came within 24h. Top notch.

  9. Ricardo

    Quality is amazing and my bass sounds great! I bought it with the 0.022mfd tone caps for both pots, and together with the fralin jazz bass pickups. Installed it in my squire modified vintage ’77 jazz bass, it really transformed it into a great sounding instrument.

  10. Ted Mabbatt

    Top quality components all masterfully wired. Super easy to install.

  11. Salvatore

    Solid American-made construction. Paired with Fralin’s J-bass pickups, the controls gave me tone and volume control that far surpassed my expectations. Worthy of the original Fender sound every musician seeks.

  12. Hong

    Bought a Fender American Pro ii Jazz bass and to be honest I’m not quite happy with it so I’ve been doing some mods lately.

    First, I bought a pair of Fralin 60s Jazz bass pups and swapped out the factory fitted V-Mods ii and the difference is night and day! a
    I much prefer the tone from Fralin 60s, punchy, articulate with the iconic jazz bass growl and it does not get muddy when I rolled it off a bit. I’ve always wanted to have a jazz bass with stacked knobs so I finally pulled the triggered and have it installed on my pro ii jazz bass.

    OH man I tell you what the tone I can get out of this combo (Fralin 60s + stacked knobs prewired kit) is unlimited and the installation is simple all you need is a soldering iron and I got it done in just under 10mins. If I was going to buy another J-Bass I would definitely fit it with another set of Fralin stacked knobs prewired kit!

    Build quality A+++
    Components used A+++
    Tone A+++

  13. Robert Hammill

    You guys are awesome. I just installed my pickups and control plate into my Sire V7 fretless, and it sounds fantastic. So much more bottom end. So much fuller sounding. Looks sharp too! I’m an absolute beginner with bass mods and the flags ya’ll left on wires to show what to solder where, made it so much simpler. The e-mails you sent while waiting for the build to be complete were also helpful! I can’t thank you enough and would recommend Fralin to anyone and everyone.

  14. hbreder

    Purchased the control plate to go with the Fralin split pickups previously installed on my jazz bass.
    Ordered the 0.022mfd oil caps on both controls. Easy to install. They actually put temporary wires with flags attached to show where to solder the pickup wires to the pots. The tone is a vast improvement over the stock controls and having a separate tone control for each pickup allows for greater range. My bass has never sounded better.

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Fralin Warranty Stamp

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Our commitment to quality is unwavering. We build our products to last and stand by our products and manufacturing process—period. We're so confident in the quality of our pickups that we offer a 10-year warranty against manufacturing defects. This warranty is our promise to you that you're investing in a high-quality, durable product that will stand the test of time.
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Our commitment to quality extends to the materials we use. We make all our pickups by hand, one at a time, in our small, humble shop in Richmond, VA, using 100% USA-made parts. This ensures we can build, wind, and assemble all our pickups with great care. We use only the best materials we can.
Fralin Exchange Stamp

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Experience our exclusive 30-Day Exchange Program, designed to give you the peace of mind you deserve. It allows you to thoroughly test your pickups in your preferred environment, whether it's on stage or on the road. If you have doubts about your choice, just contact us. We will make it easy to exchange for a better set of pickups.