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 current turnaround time for a harness orders is around 5-7 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 - The McNelly Broncomaster pickup is currently on made to order basis, and the currently McNelly leadtime is 12 weeks from time of order. Please note this if you place a full kit order.

Model Description
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. This, along with the McNelly Pickups replacement pickup, specifically designed for Bronco and Musicmaster turns this bass into a serious tonal instrument.


With or without McNelly Broncomaster bass pickup?
I offer this pre-wired loom/harness kit as a complete upgrade alongside a pre-wired McNelly Broncomaster bass pickup. This pickup was designed by Tim McNelly specifically for the Bronco and Musicmaster bass, it features a true bass pickup design and has a great double pole piece design and hotter output for a full tone. Full description and demo video for this pickup can be found HERE. If you would like to order my wiring kit pre-wired to a McNelly Broncomaster pickup, select it via the drop down menu. If you don't wish to have the pickup and simply want the wiring kit/harness, then you can certainly do so here too. Lead times for each option chosen can be found right at the top of this product listing.
If you choose the pickup additionally, you are given the choice of a white, or black pickup cover. If you are just ordering the wiring harness, this option is not relevant.

Which pot shafts do I need?
For this kit I offer the choice of what spec of pot shaft you require. This ultimately comes down to what control knobs you plan to use on the bass. Split shaft pots use push-fit control knobs whereas solid shaft pots require control knobs that fix to the pot via a grub screw. Both are a different size and measurements are detailed below.
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 control knob categories on the store.

Fitting notes

I have intended for my wiring harnesses to be as simple as possible to install to your Musicmaster bass, as well as writing in depth fitting guides, how-to instructions documenting the step by step process as well as a simple to follow wiring diagram. But here are some important spec and fitting notes that will hopefully help you assess whether the kit is suitable for your bass guitar and what is required to allow it to fit correctly.

Will the pots fit my pickguard?
The components I use in my Signature Series wiring kits are for the most part, USA imperial specification. So depending on where your musicmaster was manufactured will be the deciding factor on whether the pots will be a direct fit, or the pickguard will need modification to fit. Or alternatively, purchase a new pickguard that is already suited to the US spec components. The CTS pots have a mounting thread shaft diameter of 0.370" / 9.4mm so I recommend for ease of install a control plate with a 0.394" / 10mm pot mounting hole. The jack socket I use in this kit again is imperial specification, the outer thread diameter measures 0.367" / 9.32mm and ideally requires a 0.394" / 10mm hole to comfortably mount.

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.

Parts used/included
- CTS '450' Series +/-10% Tolerance pots - 250k, choice of solid or split shafts.
- .022uF 'Yellow Mustard' type tone capacitor 
- Gavitt USA made cloth covered 22AWG wire
- 20AWG Tinned copper ground
- Pure Tone multi contact jack socket
- Soldered using Rapid 22SWG lead-free solder

Can you use different spec parts for me?
If you require this kit but want a different value pot or cap spec, by all means just let me know. If you need 500k pots instead for example or want a .047uF value cap instead of the standard .022uF value, those custom requests are happily catered for. Either e-mail me prior to placing your order, or drop a note in the order comments box upon placing your order and I will use those specs when making your wiring kit. 
I do not however offer a custom harness service, changes to the schematic
 nor will use other brands of components. I have spent a long time testing and finding the components I feel will get the best out of the sound and last well in use. Thanks for your understanding.