Pre-Wired Guitar wiring harness | ES-335, ES-330 & Casino kit | Right Handed

£94.99

Please use the tabs below to read through the information about this Pre-Wired harness kit. From a run down of what the kit does, to important fitting information and full specs.

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!

Model description

The 335/330 is one of, if not my most favourite Gibson guitar design. The 'Electric Spanish' semi-hollow body design is incredibly versatile and capable of some superb guitar tones. I truly hope my harness for the 335 helps bring out the best in this instrument, and hope the subtle component choices I have made help make the install that little bit easier. 335s are a little feared by guitarists when it comes to doing wiring work, due to limited accessibility via the thin F-Holes. I have chosen items like the Switchcraft 'Short Frame' 3 way toggle switch, which is smaller in overall size than a traditional Switchcraft switch, making fitting it through the f-hole easier as well as having a much longer thread length making it easier to mount up once inside the guitar. I have also chosen my usual Pure Tone multi contact jack socket for this very reason too, featuring an extended thread length as standard to help mounting that little bit easier. 
Wired '50s' style.

Which models does this kit fit?

This spec/style kit is a suitable replacement and/or upgrade kit for a few similar guitar models. These are of course the ES-335, as well as the ES-330, Epi Casino, DG-335, ES-355 (mono only).

Please note that it is not a direct fit/replacement for an ES-339 for example as that model has the jack located on the body side and slightly different layout.

Product Options

.01uF or .022uF neck position tone cap value?
Troubled by a dark sounding neck pickup? Well it's not totally un-common with Gibson type guitars or humbuckers in general so don't worry, you have some ways in which it can be improved. Although the standard spec harness will I'm sure help the pickup breathe and is ultimately the most popular spec choice, I now also with the choice of a .01uF value cap in the neck position instead to help clear up a darker sounding neck pickup. 
This is very much personal choice and/or how you are finding the balance between the neck and bridge pickup currently.  The main thing to consider is whether you feel your neck pickup is too dark/muddy compared to the bridge pickup. If it is and you want to try and help brighten it up a little, then a .01uF value cap in that position may be useful to you. If you like how your neck pickup sounds, then stick with a .022uF! It's the most popular choice and the 'go-to' cap value for most P90s and Humbuckers generally.

Fitting Information

I have intended for my wiring harnesses to be as simple as possible to install to your ES-335, as well as writing in depth general fitting guides and a simple to follow wiring diagram. There are also multiple useful how-to guides regarding wiring work found HERE too. But in this section you'll find some important fitting notes that will hopefully help you assess whether the kit is suitable for your exact 335 or what is required to allow it to fit correctly.

Can I fit this kit myself?
This ultimately comes down to whether you own the equipment needed to correctly and safely install the kit, or how comfortable you feel working on your own guitar. I do feel that installing a pre-wired guitar harness is do-able for many guitarists but only if the correct tools are used and care is taken to ensure you do not damage the kit, your guitar or yourself! Granted, the semi-hollow guitar does introduce some further 'complications' in regards to a re-wire job, due to needing to feed the wires through the guitars f-hole for example. It's a job where patience is required for sure.
There are detailed 
installation guides here on my website, as well as simple to follow wiring diagrams all to help make the process as easy as possible and in my experience, these have helped thousands of my customers carry out their own install. But if for any reason you have concerns about fitting the kit yourself which is entirely understandable, then I'm sure you'll agree that it is likely best to have a professional fit the kit and help ensure your purchased kit, and your beloved guitar are both looked after and worked on correctly. 
If you are local to me (Stourbridge, West Midlands) I take on guitar work no problem at all so will certainly be able to help install your Signature Series harness. 

Will the pots/jack/switch fit my guitar?
The components I use in my Signature Series wiring kits are for the most part, USA imperial specification. If you're fitting this harness to a far east built guitar such as a Epiphone or similar brand, then you may have to widen the holes in the body to accommodate for these imperial measurement pots. The CTS pots and Pure Tone Jack have a mounting thread shaft diameter of 0.369" / 9.38mm so I recommend for ease of install a body mouting hole with 0.394" / 10mm diameter. You can widen the holes in the body and I recommend doing this safely with a step cutter drill bit. I also offer this as a service so if you would like me to widen your 335 body for you, do please get in touch and we can organise this additionally if you are local of course.
The Switchcraft toggle switch has a mounting thread diameter of 0.462" / 11.75mm so ideally needs a 0.472" / 12mm hole to comfortably mount.

If you’re buying this kit for a USA made 335, then should be a direct, no modifications install process for you. 


What control knobs will fit?
The kit uses CTS Split shaft pots which have a adjustable split shaft diameter of 5.95mm w/ 24 splines. You will need control knobs that suit these measurements.
Do not attempt to force fit smaller, metric/import spec control knobs onto the imperial USA spec pots, doing this can damage the pot.

If you do require a US spec control knobs, I do carry a selection of popular options in stock and they can be viewed in the Control Knob category on the store.

Which switch tip will fit?
Much like with the control knobs, the Switchcraft switch used in this kit is USA spec, with imperial thread sizes. Therefore you need a switch tip which will fit a Switchcraft switch, with an imperial thread pattern.

If you do require a US spec switch tip, I do carry a selection of popular options in stock and they can be viewed in the Switch Tips category on the store.

Specs/Parts included

- 4x CTS 450 Series audio taper short shaft pots - 500k split shaft
- 2x .022uF 'Yellow Mustard' type tone capacitor, or
- if the .01uF value cap option chosen, you will receive x1 .01uF 'Yellow Mustard' type tone cap and x1022uF 'Yellow Mustard' type tone capacitor
- 20AWG Tinned copper ground
- Switchcraft Short Frame 3 way toggle switch (Nickel)
- Pure Tone multi contact jack socket (Nickel)
- Gavitt Braided 22AWG wire
- Soldered using R-Tech Premium Lead-Free (Sn95.5Ag3.9Cu0.6) 22swg Solder wire 
RoHS Compliant

Please note - wiring kit does not include new control knobs/switch tip but does include the pot/jack mounting nuts and washers and switch mounting nut.

Why these spec parts over others available?
Simply put, component choice has been one of the most important parts of my product development. I have worked on guitars for many years, and built these kits professionally since 2015, and as a result have been able to see and experience working on the majority of components available on the market. In my findings, A/B testing and more, I have found the components I decided on for my Signature Series to be the most reliable, best tolerance and great functioning parts to use to help customers get the most out of their instruments. I use CTS '450' series premium spec pots as they have a tight tolerance, and will consistently provide me with accurate value, as well as very solid build quality. I use trusty 'Mustard' style polyester film 'tone' capacitors as in my opinion they simply can't be beat for great value, solid construction, solid lead-outs, super tight tolerances and reliable tone/function. I would personally much rather use a trusty Mustard for example over something like a paper in oil, as from experience that are so much more reliable to use. This is from carrying out a lot of A/B testing, both tonally, as well as armed with the multi-meter for testing values and actual tolerances, as well as handling them to test construction quality for long lasting reliability in use. I use the brilliant 'Pure Tone' Multi Contact Jack sockets as they are incredibly reliable, due to their additional contact points for both tip and sleeve. I use CRL, Oak and Switchcraft brand switches across the range as these are built very well, with care will last for many years to come and have long since provided me with reliable use professionally. All kits are wired up with quality USA made Gavitt wire, it's great to work with, super consistent gauge and provides me with a very reliable quality item for my kits. I totally understand that with anything guitar, it is subjective, but I have, with an open mind, thoroughly tested a broad variety of components over the years and these have all become the items I trust to use every day. 

Harness FAQ's

I've been proudly making, developing and installing my pre-wired guitar harnesses since the beginning of the Home of Tone back in 2015 (time flies when you're having fun right!). Although I feel I do my best in covering as much information as possible across the various product listings, fitting guides, wiring diagrams and more, I thought it might be helpful to put together an FAQ's page that covers some of the general additional questions I get asked. You can view these Harness FAQ's HERE

'Ground Bug' deal!

Looking forward to installing your new wiring, but a little worried about making the ground connections to the pot casings? First time soldering and hear the horror stories of frying pots, or just simply want to neaten up your installs? Then the awesome 'Ground Bug' will help with any of these concerns, beginner or pro modders alike. The Ground Bug is a pot washer that fits between the pot casing and the pickguard/body and has a number of lugs (much like with the main signal connections on the pot for example) to which you can very easily solder your ground wire connections too. Completely removing the worry and risk of soldering a pot casing, something I know many guitarists complain about having to learn to do. 
I have been stocking Ground Bugs for a while, and they really are the perfect match for a pre-wired harness as they further help you with your installs. So I have set up a 10% off Ground Bug deals when purchased with a Home of Tone Signature Series pre-wired harness. This is an automatic discount code, so all you need to have is a Signature Series kit, and a Ground bug in your cart, and the discount will automatically be applied to the bug for you! Click HERE to view the Ground Bug listing

Do you make custom harnesses?

I'm afraid I do not offer a custom harness service. Only kits developed, tested and listed on my website are the available kits. So no custom schematics etc. If you happen to be local to my office, then I do carry out custom work in house, but in regards to shipped out pre-wired harnesses I do not offer custom kits. I am however happy to use different pot values or cap values within reason if you have a specific requirement that differs to the specs listed above. If this is relevant to yourself then please get in touch to discuss further to ensure the request is possible. 

Please use the tabs below to read through the information about this Pre-Wired harness kit. From a run down of what the kit does, to important fitting information and full specs.

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!

The 335/330 is one of, if not my most favourite Gibson guitar design. The 'Electric Spanish' semi-hollow body design is incredibly versatile and capable of some superb guitar tones. I truly hope my harness for the 335 helps bring out the best in this instrument, and hope the subtle component choices I have made help make the install that little bit easier. 335s are a little feared by guitarists when it comes to doing wiring work, due to limited accessibility via the thin F-Holes. I have chosen items like the Switchcraft 'Short Frame' 3 way toggle switch, which is smaller in overall size than a traditional Switchcraft switch, making fitting it through the f-hole easier as well as having a much longer thread length making it easier to mount up once inside the guitar. I have also chosen my usual Pure Tone multi contact jack socket for this very reason too, featuring an extended thread length as standard to help mounting that little bit easier. 
Wired '50s' style.

This spec/style kit is a suitable replacement and/or upgrade kit for a few similar guitar models. These are of course the ES-335, as well as the ES-330, Epi Casino, DG-335, ES-355 (mono only).

Please note that it is not a direct fit/replacement for an ES-339 for example as that model has the jack located on the body side and slightly different layout.

.01uF or .022uF neck position tone cap value?
Troubled by a dark sounding neck pickup? Well it's not totally un-common with Gibson type guitars or humbuckers in general so don't worry, you have some ways in which it can be improved. Although the standard spec harness will I'm sure help the pickup breathe and is ultimately the most popular spec choice, I now also with the choice of a .01uF value cap in the neck position instead to help clear up a darker sounding neck pickup. 
This is very much personal choice and/or how you are finding the balance between the neck and bridge pickup currently.  The main thing to consider is whether you feel your neck pickup is too dark/muddy compared to the bridge pickup. If it is and you want to try and help brighten it up a little, then a .01uF value cap in that position may be useful to you. If you like how your neck pickup sounds, then stick with a .022uF! It's the most popular choice and the 'go-to' cap value for most P90s and Humbuckers generally.

I have intended for my wiring harnesses to be as simple as possible to install to your ES-335, as well as writing in depth general fitting guides and a simple to follow wiring diagram. There are also multiple useful how-to guides regarding wiring work found HERE too. But in this section you'll find some important fitting notes that will hopefully help you assess whether the kit is suitable for your exact 335 or what is required to allow it to fit correctly.

Can I fit this kit myself?
This ultimately comes down to whether you own the equipment needed to correctly and safely install the kit, or how comfortable you feel working on your own guitar. I do feel that installing a pre-wired guitar harness is do-able for many guitarists but only if the correct tools are used and care is taken to ensure you do not damage the kit, your guitar or yourself! Granted, the semi-hollow guitar does introduce some further 'complications' in regards to a re-wire job, due to needing to feed the wires through the guitars f-hole for example. It's a job where patience is required for sure.
There are detailed 
installation guides here on my website, as well as simple to follow wiring diagrams all to help make the process as easy as possible and in my experience, these have helped thousands of my customers carry out their own install. But if for any reason you have concerns about fitting the kit yourself which is entirely understandable, then I'm sure you'll agree that it is likely best to have a professional fit the kit and help ensure your purchased kit, and your beloved guitar are both looked after and worked on correctly. 
If you are local to me (Stourbridge, West Midlands) I take on guitar work no problem at all so will certainly be able to help install your Signature Series harness. 

Will the pots/jack/switch fit my guitar?
The components I use in my Signature Series wiring kits are for the most part, USA imperial specification. If you're fitting this harness to a far east built guitar such as a Epiphone or similar brand, then you may have to widen the holes in the body to accommodate for these imperial measurement pots. The CTS pots and Pure Tone Jack have a mounting thread shaft diameter of 0.369" / 9.38mm so I recommend for ease of install a body mouting hole with 0.394" / 10mm diameter. You can widen the holes in the body and I recommend doing this safely with a step cutter drill bit. I also offer this as a service so if you would like me to widen your 335 body for you, do please get in touch and we can organise this additionally if you are local of course.
The Switchcraft toggle switch has a mounting thread diameter of 0.462" / 11.75mm so ideally needs a 0.472" / 12mm hole to comfortably mount.

If you’re buying this kit for a USA made 335, then should be a direct, no modifications install process for you. 


What control knobs will fit?
The kit uses CTS Split shaft pots which have a adjustable split shaft diameter of 5.95mm w/ 24 splines. You will need control knobs that suit these measurements.
Do not attempt to force fit smaller, metric/import spec control knobs onto the imperial USA spec pots, doing this can damage the pot.

If you do require a US spec control knobs, I do carry a selection of popular options in stock and they can be viewed in the Control Knob category on the store.

Which switch tip will fit?
Much like with the control knobs, the Switchcraft switch used in this kit is USA spec, with imperial thread sizes. Therefore you need a switch tip which will fit a Switchcraft switch, with an imperial thread pattern.

If you do require a US spec switch tip, I do carry a selection of popular options in stock and they can be viewed in the Switch Tips category on the store.

- 4x CTS 450 Series audio taper short shaft pots - 500k split shaft
- 2x .022uF 'Yellow Mustard' type tone capacitor, or
- if the .01uF value cap option chosen, you will receive x1 .01uF 'Yellow Mustard' type tone cap and x1022uF 'Yellow Mustard' type tone capacitor
- 20AWG Tinned copper ground
- Switchcraft Short Frame 3 way toggle switch (Nickel)
- Pure Tone multi contact jack socket (Nickel)
- Gavitt Braided 22AWG wire
- Soldered using R-Tech Premium Lead-Free (Sn95.5Ag3.9Cu0.6) 22swg Solder wire 
RoHS Compliant

Please note - wiring kit does not include new control knobs/switch tip but does include the pot/jack mounting nuts and washers and switch mounting nut.

Why these spec parts over others available?
Simply put, component choice has been one of the most important parts of my product development. I have worked on guitars for many years, and built these kits professionally since 2015, and as a result have been able to see and experience working on the majority of components available on the market. In my findings, A/B testing and more, I have found the components I decided on for my Signature Series to be the most reliable, best tolerance and great functioning parts to use to help customers get the most out of their instruments. I use CTS '450' series premium spec pots as they have a tight tolerance, and will consistently provide me with accurate value, as well as very solid build quality. I use trusty 'Mustard' style polyester film 'tone' capacitors as in my opinion they simply can't be beat for great value, solid construction, solid lead-outs, super tight tolerances and reliable tone/function. I would personally much rather use a trusty Mustard for example over something like a paper in oil, as from experience that are so much more reliable to use. This is from carrying out a lot of A/B testing, both tonally, as well as armed with the multi-meter for testing values and actual tolerances, as well as handling them to test construction quality for long lasting reliability in use. I use the brilliant 'Pure Tone' Multi Contact Jack sockets as they are incredibly reliable, due to their additional contact points for both tip and sleeve. I use CRL, Oak and Switchcraft brand switches across the range as these are built very well, with care will last for many years to come and have long since provided me with reliable use professionally. All kits are wired up with quality USA made Gavitt wire, it's great to work with, super consistent gauge and provides me with a very reliable quality item for my kits. I totally understand that with anything guitar, it is subjective, but I have, with an open mind, thoroughly tested a broad variety of components over the years and these have all become the items I trust to use every day. 

I've been proudly making, developing and installing my pre-wired guitar harnesses since the beginning of the Home of Tone back in 2015 (time flies when you're having fun right!). Although I feel I do my best in covering as much information as possible across the various product listings, fitting guides, wiring diagrams and more, I thought it might be helpful to put together an FAQ's page that covers some of the general additional questions I get asked. You can view these Harness FAQ's HERE

Looking forward to installing your new wiring, but a little worried about making the ground connections to the pot casings? First time soldering and hear the horror stories of frying pots, or just simply want to neaten up your installs? Then the awesome 'Ground Bug' will help with any of these concerns, beginner or pro modders alike. The Ground Bug is a pot washer that fits between the pot casing and the pickguard/body and has a number of lugs (much like with the main signal connections on the pot for example) to which you can very easily solder your ground wire connections too. Completely removing the worry and risk of soldering a pot casing, something I know many guitarists complain about having to learn to do. 
I have been stocking Ground Bugs for a while, and they really are the perfect match for a pre-wired harness as they further help you with your installs. So I have set up a 10% off Ground Bug deals when purchased with a Home of Tone Signature Series pre-wired harness. This is an automatic discount code, so all you need to have is a Signature Series kit, and a Ground bug in your cart, and the discount will automatically be applied to the bug for you! Click HERE to view the Ground Bug listing

I'm afraid I do not offer a custom harness service. Only kits developed, tested and listed on my website are the available kits. So no custom schematics etc. If you happen to be local to my office, then I do carry out custom work in house, but in regards to shipped out pre-wired harnesses I do not offer custom kits. I am however happy to use different pot values or cap values within reason if you have a specific requirement that differs to the specs listed above. If this is relevant to yourself then please get in touch to discuss further to ensure the request is possible.