Skip to product information
1 of 2

Northwest Guitars

Pre-wired Jazz Bass Wiring Kit CTS pots, Orange Drop or Oil Capacitor

Pre-wired Jazz Bass Wiring Kit CTS pots, Orange Drop or Oil Capacitor


Regular price £39.99
Regular price Sale price £39.99
Sale Sold out

Low stock: 6 left

Capacitor Type

Shipping & Returns

Order before 3pm for same day despatch Monday-Friday

Free shipping on UK orders over £199*

See our full shipping/returns options here

Pre-Wired Wiring Kit for Jazz Bass

This Jazz Bass Wiring Kit is a powerful upgrade for the stock electronics of your Fender/Squier Jazz Bass. Packed with high quality components from top manufacturers, its an inexpensive way to improve the tonality of your guitar.


Our Jazz Bass wiring kit will fit genuine Fender guitars, and will work in the vast majority of Squier/import models with a little modification. When installing on a Squier or import guitar, you may need to widen the control knob holes to ensure the pots fit. You may also need to replace your current guitar knobs with their imperial sized cousins.

All of our kits come with an easy to follow wiring diagram. For help on using our Jazz Bass wiring kit please refer to our video guide on wiring a Jazz Bass.

Our wiring kit for Jazz Bass includes:

  • 3 x 250k Matched audio taper pots (10% tolerance)
  • 1 x 0.047uf Capacitor (Orange Drop or Paper in Oil)
  • Gavitt black cloth push-back wire 
  • Gavitt white cloth push-back wire 
  • 1 x Switchcraft USA 1/4'' jack socket

Orange Drop Capacitor

Orange Drop capacitors are often described as ’bright’ sounding and their primary benefit comes from their reliability, they essentially never go wrong. For a professional guitarist, stability and consistency is what you need in an instrument that has to play shows night after night, which is exactly why Orange Drop capacitors are so popular amongst guitarists and guitar builders.

CTS Audio Taper Pots

CTS pots are typically used by higher end guitar builders and techs but this is not due to any difference in tone. The main reason cited for using CTS pots is that they will last longer due to a more sturdy construction, and for that reason you’ll often find them used in USA-made guitars and guitar gear.

We supply audio taper pots for both volume and tone as these produce a smoother and more rounded sweep. All pots are metered and matched to ensure a perfect balance of tone and volume across all switch positions.

Switchcraft Mono Output Jack

Large guitar manufacturers will very often cut corners by using cheaper components, particularly on the input jack. Switchcraft have a great reputation for using only the highest quality materials in their input jacks, providing a significant durability and performance upgrade over stock input jacks.

Gavitt Cloth Push Back Wire

Gavitt push back cloth wire features regularly on high end and vintage guitars, providing easy usability for neat and tidy wiring jobs. It's double insulated to prevent you burning through the outer wire and there's no need for wire stripping thanks to its push-back design.

Paper-in-Oil Cap Upgrade

Want an extra vintage tone upgrade? Add Paper-in-Oil caps instead of Orange Drop. Paper in Oil (PIO) capacitors are an older technology, highly sought after primarily due to their use in many vintage instruments such as 50s era Gibsons. The capacitor is literally filled with paper and a special oil before being sealed in thermoplastic, delivering a darker, warmer and smoother tone.

Will this fit my guitar?

Our wiring kit for P Bass will fit all genuine Fender USA/MIM Jazz Basses and will also fit the majority of Jazz Bass type guitars and imported models.

Many imported models use the smaller Alpha pots, so it may be neccesary to drill your pickguard holes to 10mm diameter to accommodate the larger USA pot shafts. If you are upgrading your Alpha pots to CTS then you will also need to purchase imperial control knobs that fit the larger CTS pot shafts.

All of our kits come with an easy to follow wiring diagram. For help on using our Tele wiring kit please refer to our video guide on wiring a Jazz Bass



View full details

Customer Reviews

Based on 5 reviews
Jonathan Ainsworth
Great Service

I bought a pre-wired circuit for my bass guitar from Northwest Guitars because I'm bad at soldiering. It was well made and easy to install and sounds great too. I'd definitely shop again if I need anything else

Sebastien BRIGNONE
Awesome harness for JB

Great parts with cts and switchcraft, great soldering job, really good price. What else can I say? Buy it !

Ed Smith
Excellent product

Excellent product. High quality components.

George Nicol
Jazz Bass Wiring Kit

This is a great kit to upgrade a Jazz bass. I liked the online chat, where I could discuss my exacting requirements for my AM Standard Fender Jazz, and I'm delighted with the product. This kit sounds perfect with Tonerider pickups. 5 stars

James Wilson

Pre-wired Jazz Bass Wiring Kit CTS pots, Orange Drop or Oil Capacitor