HighDeaf1080p
New member
Hi everyone,
I recently purchased an Epiphone Les Paul PRO/FX for the purpose of gutting and replacing all the electronics. The guitar has a Floyd Rose in it, and currently there is a very faint "crackling/popping" that goes away when I touch the strings.
I have purchased new switches, jacks, pots, and Seymour Duncan pickups...Jazz for the neck position, and '59 Hybrid trembucker for the bridge. My hope is to wire this guitar such that the Jazz pickup in the neck position can be switched between series/parallel with its push-pull volume pot, and the '59 hybrid in the bridge can be switched between single-coil and humbucker with its push-pull volume pot.
I have spliced together two wiring diagrams thusly:

While I'm a little intimidated, I think I can handle this job myself, and feel like I'm pretty confident about everything except the wiring of the switchcraft 3-way switch, and how that relates to grounding.
My intent was to use vintage shielded wire, with the metal braided ground on the outside. I would plan to run three of them (1 long one to go from the switch's output to the guitar's output jack, and two shorter ones to run from the volume pots to the two inputs of the switch). I would then solder a jumper from the ground post of the switch, and use it to solder together all three braided metal ground sleeves. I plan to slide them all into a length of heat shrink tubing to bind them together tightly as they run from the switch to the guitar pot cavity...and then the two shorter wires' conductors would get soldered to the pot terminals, the longer wire goes on past the pots and gets soldered to the hot output jack tip and also covered with heat shrink so the metal braid cant touch anything hot and short circuit...but what do I do with the ground/shield for this long run of wires once I get into the pot cavity with them? I am lost, and am worried I will inadvertently create a ground loop.
Since all three wires shielding are touching for quite some length, it is acting as one long ground wire. I could snip it all short just after it gets into the pot cavity, and solder the ground/shield to the back of one of the pots, where it would join the grounding circuit there, sort of as is shown in the above wiring diagram...but then the longer wire going on to the output jack would not have shielding. There fore should I not solder to one of the pots, and instead continue on with the shielding all the way to the output jack and solder it to the sleeve of that jack along with the ground wire coming from the grounding circuit of the pots?
Maybe its best to bring the ground from the bridge, the ground from the pots, and the ground from the switch all three together at the output jack sleeve solder point?
The grounds for the pickups will all be grounded to the backs of pots as shown in the diagram above.
Any advice on how to wire this switch while prevent a grounding loop, noise/hum, and still keep the long runs of wires shielded would be greatly appreciated.
Eric
I recently purchased an Epiphone Les Paul PRO/FX for the purpose of gutting and replacing all the electronics. The guitar has a Floyd Rose in it, and currently there is a very faint "crackling/popping" that goes away when I touch the strings.
I have purchased new switches, jacks, pots, and Seymour Duncan pickups...Jazz for the neck position, and '59 Hybrid trembucker for the bridge. My hope is to wire this guitar such that the Jazz pickup in the neck position can be switched between series/parallel with its push-pull volume pot, and the '59 hybrid in the bridge can be switched between single-coil and humbucker with its push-pull volume pot.
I have spliced together two wiring diagrams thusly:

While I'm a little intimidated, I think I can handle this job myself, and feel like I'm pretty confident about everything except the wiring of the switchcraft 3-way switch, and how that relates to grounding.
My intent was to use vintage shielded wire, with the metal braided ground on the outside. I would plan to run three of them (1 long one to go from the switch's output to the guitar's output jack, and two shorter ones to run from the volume pots to the two inputs of the switch). I would then solder a jumper from the ground post of the switch, and use it to solder together all three braided metal ground sleeves. I plan to slide them all into a length of heat shrink tubing to bind them together tightly as they run from the switch to the guitar pot cavity...and then the two shorter wires' conductors would get soldered to the pot terminals, the longer wire goes on past the pots and gets soldered to the hot output jack tip and also covered with heat shrink so the metal braid cant touch anything hot and short circuit...but what do I do with the ground/shield for this long run of wires once I get into the pot cavity with them? I am lost, and am worried I will inadvertently create a ground loop.
Since all three wires shielding are touching for quite some length, it is acting as one long ground wire. I could snip it all short just after it gets into the pot cavity, and solder the ground/shield to the back of one of the pots, where it would join the grounding circuit there, sort of as is shown in the above wiring diagram...but then the longer wire going on to the output jack would not have shielding. There fore should I not solder to one of the pots, and instead continue on with the shielding all the way to the output jack and solder it to the sleeve of that jack along with the ground wire coming from the grounding circuit of the pots?
Maybe its best to bring the ground from the bridge, the ground from the pots, and the ground from the switch all three together at the output jack sleeve solder point?
The grounds for the pickups will all be grounded to the backs of pots as shown in the diagram above.
Any advice on how to wire this switch while prevent a grounding loop, noise/hum, and still keep the long runs of wires shielded would be greatly appreciated.
Eric
Last edited:



