Prewired Jazz Bass Harness

Incredible Quality, Easy Install.

$120

(17)
Emerson Logo New & Improved Design
Built With Premier Pro Pots

The Lindy Fralin Prewired Jazz Bass Harness 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!

Options

Customize your Prewired Jazz Bass Harness:

Selection Needed
Select Options Above To Display Add-Ons

Tone Cap *

Tell us what Tone Cap you’d like us to install on your Prewired Jazz Bass Control Plate. All Tone Caps are USA-Made Jupiter Foil & Oil Caps.

Add A Control Plate & Knobs

New for 2026: Add an optional plate and knobs! In lieu of the harness plate, we can wire up your electronics on a brand-new USA-made Plate and Knobs.

Notice
Due to the nature of Raw Nickel, Raw Nickel may contain slight cosemetic defects or abrasions.
Recommendation:
We recommend using 2-Conductor With Shield Lead when purchasing a single pickup. 2-Conductor lead allows you to reverse the phase should you have phase issues. Learn About Lead Choice
Note:
Upgrade To A Prewired Pickguard

Accepted payment methods

Prewired Jazz Bass Harness Info:

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

Features

Lindy photo
Update 2026:
Starting this year, we’ve changed the way we make our Control Plates. Our Control Plates are built as a Harness first, with the option to add a plate and knobs should you need it. This year, we’ve decided to build our Harnesses with our most premium ingredients – Emerson Premier Pro Pots and Jupiter tone caps.

Based on our best-selling Prewired Telecaster Control Plates and Prewired Pickguards, we decided to give the bass players some prewired love! Introducing the brand-new Prewired Jazz Bass Harness by Fralin Pickups: USA-Made quality, Emerson Premier Pro® Pots, the rock-solid PureTone Output Jack, all beautifully wired and ready to install in a few minutes.

  • Optonal USA-Made control plate, with a Chrome finish
  • Emerson® Solid Shaft 250K or 500K pots for unbeatable durability
  • Standard Jazz Bass wiring, with independent Neck and Bridge volumes and a Master Tone control
  • Wide assortment of Tone Caps available to fine-tune your tone
  • Incredibly simple installation involves soldering only 4 wires

How It's Made:

POT VALUE

Choose 250K Pots if you want the standard operation. This is what comes standard on most Jazz Basses. If you have dark-sounding pickups, or, you want to achieve a “crispier” tone, go with 500K pots.

SIZING

Prewired Jazz Bass Control Plate Dimensions

 

 

 

 

Tech Specs:

SPECIFICATION VALUE
Pot Type:Emerson Custom Premier Pro
Pot Shaft Length:3/8"
Pot Shaft Diameter:3/8"
Tone Cap:USA-Made Foil & Oil

Installation Instructions

This installation guide covers the standard Jazz Bass Wiring Harness, with Two Volumes, Master Tone and Output Jack. If you ordered the Harness with Concentric Pots, 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 Harness Installation instructions

Prewired Jazz Bass Harness FAQ's


Product FAQ's

People frequently ask these questions about our Prewired Jazz Bass Harness. If you have a question that you don't see listed here, click "Ask" in the Quick Links section above.

  • How long will my Harness take?

    Please give us 3-5 business days to build and assemble your Jazz Bass Harness. All orders are made to order and wired by hand.

  • Can I get it with a Chrome Plate?

    Yes! In the “Options & Addons” window, select your plate and choice of knobs. Plates and Knobs are sold together, and cannot be purchased individually.

  • Can I return my Harness?

    No. Since these are so custom and made to order, all Jazz Bass Harness sales are final, and not available for exchange or return.

  • What if I don’t see what I want?

    Please use the “Notes” field on the checkout screen to type in any special requests. Use this field to describe how you want it wired as well if you wish to have anything customized. Please note that we can’t accommodate all requests.

Premium parts. Pro results.

Upgrade our Prewired Jazz Bass Harness with the best pots in the industry.

Fralin Emerson Collaboration

We are thrilled to announce the latest upgrade to our Prewired Lineup: Emerson Custom’s Premier Pro Pots! Our partnership with Emerson Custom guarantees that your next Prewired Pickguard, Control Plate or Harness will feature the highest-quality pots available in the industry.

At Fralin Pickups, we are committed to sourcing the best parts, and when it comes to pots, Emerson Custom’s Premier Pro Pots are the finest we have ever used. These pots boast a sturdy build quality, a custom audio taper, and exceptionally tight tolerances. You can confidently upgrade, knowing that each pot is reliable and built to last a lifetime.

Need Guidance?

Contact our Prewired Craftsman Directly


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Customer Reviews

17 Genuine Reviews for Prewired Jazz Bass Harness

5 star
88%
(15)
4 star
6%
(1)
3 star
6%
(1)
2 star
0%
1 star
0%
  1. Michael Byrn

    After emailing Fralin to ask some questions, I ordered the prewired jazz bass harness with the control plate, the 250K ohm pots, and the 0.02mfd Fralin Mustard Cap. I installed it in a Fender Player II jazz bass which I’d already been modding. From the time I placed the order, it took about a week to get to me even with a holiday while it was in transit. Installation was super easy, and I really do notice a difference in the way this bass sounds with this harness compared with what it came with. The resistance of the knobs is perfect for me. I’m very glad I bought this item. Shout out to Zach Hudgins for answering my questions and helping me with the order. I intend to order from Fralin again!

  2. Denzil Hathway

    The prewired control plate came beautifully soldered with placeholder leads in place and well labeled, making install a breeze. The pickup blend positions are more useful and versatile than stock as is the tone control. A simple upgrade that paired really well with the Fralin 5% overwound split coil jazz pickups. Customer service here is amazing. Highly recommend product and service.

  3. Of quality

    Made it easy for me, thx!

  4. NJ K

    Modified Sire jazz bass with LF Passive control plate . Old school sound is what I was looking for and got it with this ! Thanks to Lindy and his team ?

  5. Artur Kosiek

    Superb. Great company, great support, excellent products.

    This review is for prewired Jazz Bass control plate and Jazz Bass pickups, which I had purchased from Thomann prior to the plate. Both products went into my Geddy Lee signature Jazz, bought new in 2007. The original pickups were good, but a bit muddy, so this year (2024) I searched for something different. After reviewing what internet had to say and watching Lindy’s interviews, I decided on Lindy Fralin pickups.
    An excellent choice it was. Feeling the sound could possibly still be improved, I ordered the control plate straight from the source.
    It has taken the sound of my Jazz in my ears to another level of clarity, which is what I was after.

    I almost equally appreciate the support LF Pickups provide, both via email and website articles – one of those stopped me in time from possibly degaussing my new pickups with the transformer soldering gun.

    I highly recommend both products, which were in their standard Fender versions.

  6. Bram van Melle

    Top notch! First class components, beautifully made, packaged and delivered. Slotted right into my MIJ Jazz Bass, and does exactly what it says on the tin. Upgraded jack is nice and firm. Controls works great, and paired with the new Fralin pickups… Well what can I say! Still playing and smiling 🙂 Thanks again Linday and Crew

  7. Denny Mentzer

    VERY hard to get cord plug in and out. I have a control plate from you before and it works fine. This one does not well at all.

    • (store manager) Tyler Delsack (Manager, Fralin Pickups)

      Hey Denny, I’m sorry to hear you’re struggling with the PureTone Output Jack – these are a little stiffer than the Switchcraft Output Jacks. If you’d like us to replace it, email me at [email protected], and I’ll work up a warranty repair for you!

  8. Norbert Poitras

    The control panel and the choice of controls is the best. I put together a bass guitar kit, with Fender neck and body and this is the first Jazz bass I’ve owned and I love it. No noise whatsoever. Thank you Fralin.

  9. Keith Curtiss

    Blown away. The only thing I can say is I will be purchasing some more Fralin Products. Installed with Split Jazz Pickups in a 16′ Fender Am Pro, it’s better than a new bass. Best review I can give is – will buy more Fralin products without a doubt.
    THANK YOU!!

  10. Keith Greiner

    Excellent quality and craftsmanship!
    The control plate installed on my new Fender CS 60’s Jazz bass with no issues. Sounds great and seems quieter than the original control plate.

  11. Mike Claugherty

    I purchased the J/B control unit. I ordered 250k pots at first but realized later I wanted 500k. The folks over at Fralin where there to help and changed my order appropriately. Shipping was slotted for 10-14 days but was here much sooner then that. On to the quality, quality seems top notch. The wires runs were very clean and the solder joints were also clean and they did no skimp on solder. The pot’s perform as expected and sound very nice. Over all a great experience and super product.

  12. Doug Milam

    Very solid component. The ‘Pure Tone’ jack is more snug than the one on my stock Fender Jazz plate, and the knobs have the right amount of resistance. I had this paired with Fralin’s Split Jazz pickups and the tone really shines. Love the made-in-the-USA quality too.

  13. Pete Richards

    I ordered control plate with the Pure Tone Output Jack upgrade. Everything seems really well made and functions perfectly. I have to deduct 1 star for the following reason. The plate did not line-up with the pickguard on my older Squier (bought years ago second-hand, date of manufacture unknown) Jazz bass. Since this is advertised as a no-return item, we ended up taking everything off the Fralin, machining out my old plate (which was metric) to accept standard specs of the Fralin and mounting everything on the old plate. So I now have a brand new plate that is of no use. No biggie and I love Fralin gear (I have the split humbuckers on my Japanese Strat and they are fantastic! ) but I think you should know about this issue of fit FYI.

  14. Thomas McFadden

    Nice addition to a cheap bass

    I got this to replace the original controls which were acting a little flaky and it was a perfect fit, looked great, and was easy to wire in. There was nothing to complain about here.

  15. John Dunn

    Excellent

    This is an excellent vintage wired plate. I purchased it when I bought some upgraded Jazz pickups for a USA Geddy Lee because I wanted to keep the original parts intact in case I reverted the mod. Now that I have been using this along with a new set of Fralin Jazz Split Coil P/U’s (5% overwind on the neck), I have to say WOW. Just plain WOW. Fralin is the go-to brand for pickups. Took me a few years to finally pull the trigger on my first set, but I’ve since upgraded my PJ with a set as well. Since this review is specifically supposed to be for the Prewired Jazz Control Plate, a few comments- First it fits perfectly, looks original and is tidy. The wiring is clean, professional solder joints, and super (I mean SUPER) easy to install. The pigtails for soldering the pickups are well marked with plenty of “tail left in the pig” to facilitate easy soldering. Highly recommend this product. Cannot ever go wrong with Lindy’s products, as I am finding out. And as far as the tone goes- just stand by because it is absolutely exactly what the doctor ordered. Thanks, guys! John

  16. Robert Fruhlinger

    Customer added no additional comments

  17. Michael Craig

    Customer added no additional comments

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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.
Fralin Handmade Stamp

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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.