Product Description

TBX Jazz Bass Wiring Harness complete with genuine Fender® TBX tone pot. This is the Tone Merchants modern take on the classic 1980’s TBX wiring made famous by Duff McKagan of Guns n Roses. The Jazz TBX wiring harness is suitable for both Jazz and PJ Bass Guitars.

All of our Tone Merchants harnesses and control plates are hand made in Tennessee, USA. Using modern PTFE coated wire, Fender® TBX tone pot, CTS volume pots, and a metal film .047uf tone capacitor. It includes Kluson knobs and a #11 Switchcraft output jack.

We provide clear instructions on how you can install a jazz bass wiring harness. Every wiring harness come with leads for you to connect the wiring of your pickups to. Then you do not need to solder directly to the pots, risking overheating the them.

What is TBX wiring?

Traditional tone pots give you a range from 1-10. A TBX tone pot will give you a treble and bass boost while remaining a completely passive instrument.  Your standard tone control goes from 1-5 and from 6-10 is where the TBX kicks in. Giving you more treble and bass to your tone. The Fender TBX tone pot is stacked and dented so you can feel when changing over from your standard tone control in the 1-5 range, through to the treble and bass extender in the 6-10 range of your tone pot. This decreases resistance, sending more bass, treble, presence and output to your amp.

TBX Jazz Bass Wiring Harness Specs:

• Fender®  TBX Tone Pot.
• CTS Volume Pots.
• Metal film .047uf tone capacitor.
• Switch Craft jacks.
• Teflon insulated wire
• Suitable for both Jazz and PJ Bass.
• Clear instructions on how to install yourself.
• Proudly made in Auckland, New Zealand.

Note wiring harness does not include or need new knobs. You can use your current tone and volume knobs to retain your current aesthetic appearance of your bass. If you would like a completed TBX control plate for Jazz Bass, follow this link.

Dispatching orders from Auckland NZ worldwide.

Your order of a Tone Merchants wiring harness will be sent on a track and trace courier to you anywhere in the world that you might be.  This can be combined with any of our awesome pickups & hardware that I stock.

If we run out of stock, or the item is listed as on Backorder. It will generally take 2 weeks to complete your order and dispatch to you. Don’t worry, I’ll be in contact with you within 24hrs to confirm your order and give you an eta on when it will be dispatched.