Pre-Wired bass guitar wiring harness | Musicmaster bass kit | Right Handed


Order times
I usually make harnesses to order, due to the variety of spec options that could be chosen across the whole range. The turnaround time for a harness orders is around 3 working days depending on quantity of orders in at the time and your order will be updated accordingly when it is dispatched. This turnaround time doesn't include the transit time. Thanks for your patience whilst I get your harness made!

Harness & Pickup deal set - I currently do not have stock of the McNelly Bronco bass pickup, so that would need to be made to order which currently holds a 12 week leadtime. 


I am a big fan of short scale basses, and the Musicmaster is one of the best!, So I looked at creating a 'drop-in' wiring harness upgrade, using the high quality components I use on my other harnesses such as CTS 'TVT' pots, Pure Tone multi contact jack, Gavitt wire and vintage style yellow mustard tone capacitor.
But I have also decided to offer it as part of a complete wiring upgrade packaging along with the McNelly Pickups replacement pickup, specifically designed for Musicmaster turns this bass into a serious tonal instrument.

I have intended for my wiring harnesses to be as simple as possible to install to your Musicmaster, as well as writing in depth fitting guides, as well as a simple to follow wiring diagram.
The parts I use, in particular the pots, are CTS branded pots which are imperial measurements. You may have to widen the holes in your pickguard to accommodate for this depending on it's original specs.
For reference, the CTS pots I use in this harness have a shaft diameter of 9.52mm.
You may also require new control knobs to fit the CTS pot 'splines'. I use Solid Shaft pots for this harness which have a shaft diameter of 6.35mm. If you would prefer split shaft pots (5.95mm 24 spline for push fit control knobs) do please just ask, but as standard this kit comes with solid shaft pots.

Centre to centre measurements between components are - 
Centre of volume pot to centre of tone pot - 41mm
Centre of tone pot to centre of jack socket - 34mm
These measurements were taken from a Genuine Fender pickguard, but I do allow for 'give' in the wire lengths between components to allow for small differences so there is some wiggle room for installation, it's not a 'fixed' measurement by any means. If these measurements are massively different to your guitar, just let me know the precise centre to centre measurements on yours and I will make it to suit that no problem at all.

Pot Shaft type?
You may also require new control knobs to fit the CTS pot 'splines'. I offer this harness with a choice of pot shaft types, depending on what style of control knobs you intended to use. If you want to use push fit style control knobs, then you will need to choose the Split Shaft version, these are US spec 5.95mm (adjustable) 24 spline pot shafts.
If you want to use tele style, grub screw fitment control knobs, then you will need to choose the solid shaft version, these are US spec 6.35mm solid shafts.
Useful tip - If you haven't decided what style of control knobs you are going to use, and can't make up your mind yet, I would recommend choosing the split shaft version as I also offer brass conversion sleeves which would convert split shaft to solid shaft pots with ease. So best recommendation if you're not sure, go for split shaft as they can always be converted easily, whereas with solid shaft pots you are tied to that as the only choice.

If you do require US spec control knobs, we do carry a selection of popular options in stock and they can be viewed in the hardware & plastic hardware categories on the store.

Ordering with the McNelly Musicmaster double pole pickup
If you are ordering the harness with the McNelly Musicmaster bass pickup as well, please note potential additional delivery time of 10-12 weeks for pickup to be made and arrive in the UK if I don't currently have stock. 
I also offer the option of me pre-soldering the pickup to the harness along with a new bridge ground wire. If this sounds helpful to you, then I am more than happy to pre-solder the pickup to your harness so it is more of a direct drop-in installation. But if you would be happy to just attache the pickup yourself, that is absolutely fine too and I offer the option also. Either option can be chosen from the drop-down options.

Parts used
- CTS '450' Series +/-10% Tolerance pots - 250k, choice of solid or split shafts.
- .022uF 'Yellow Mustard' type tone capacitor  (If you'd prefer a different value capacitor, do please get in touch and I'd be more than happy to help, but as standard all of my kits come with .022uF value)
- Gavitt USA made cloth covered 22AWG wire
- 20AWG Tinned copper ground
- Pure Tone multi contact jack socket
- Soldered using Rapid 22SWG lead-free solder