ground wiring question

[antisect]

A complicated question so i had to draw a diagram to explain.
I've used the SD wiring diagram included in the image but i'm getting quite a lot of noise and interference.
Somebody told me i need to be using shielded cables for the long run to the toggle switch (les paul style) but i'm unsure how this relates to SD's wiring diagram.

Does the external shielding in each cable replace the toggle switch ground cable from the SD diagram?
Do i ground all the external shielding of each cable to each pot like in Fig1?
If that's the case do i still need to connect all the pots together?
Or do i do it like Fig2 and miss out the pot ground connections?
I'm pretty confused.
Thanks for any help.

 

[VinceT]

Re: ground wiring question

To answer your question, either schema will work BUT there needs to be a ground to the output jack from one point only, so that you don’t get a ground loop within the guitar wiring. Per the SD diagram, the closest point is the second tone knob.

It looks like you’re thinking of doing this cable run with single core shielded cable? You can buy 4 conductor cable (same as used for HBs) and that’ll make things neater as only one cable runs the length of the guitar. Then you simply ground the bare wire at either end of the run and you’re set.


Sent from my iPad using Tapatalk

 

[antisect]

Re: ground wiring question

To answer your question, either schema will work BUT there needs to be a ground to the output jack from one point only, so that you don’t get a ground loop within the guitar wiring. Per the SD diagram, the closest point is the second tone knob.

It looks like you’re thinking of doing this cable run with single core shielded cable? You can buy 4 conductor cable (same as used for HBs) and that’ll make things neater as only one cable runs the length of the guitar. Then you simply ground the bare wire at either end of the run and you’re set.


Sent from my iPad using Tapatalk

Yes sorry should have put in the ground to the output jack on the diagram.
I was considering using multi-core shielded but wasn't sure if it would be as good.
Why would the multi-core need to be 4 conductor cable? doesn't the shielding count as the ground so i could use 3 core?

Thanks for the help

 

[VinceT]

Re: ground wiring question

Yup, multicore will work - I defaulted to 4-core because that’s what I have on hand (and one would be unused)


Sent from my iPad using Tapatalk

 

[antisect]

Re: ground wiring question

Yup, multicore will work - I defaulted to 4-core because that’s what I have on hand (and one would be unused)


Sent from my iPad using Tapatalk

Thanks again, i'll give it a go.

 

[GuitarDoc]

Re: ground wiring question

You are correct...you only need 3 wire + shield. The lead wires are as in the SD diagram (from each of the two vol pots, and to the tone pot/output jack). Your grounding would be as in your 1st diagram, but only 1 ground going from switch to back of 1 vol pot. Run a ground wire from back of that pot to back of the other vol pot then back of tone pot and finally to shield lug of output jack.