JB wiring diagram -custom diagram for a Gibson SG special- help needed please!

[oberonspacefruit]

hello chaps, great looking forum, Im hoping you can help me out with some knowledge about wiring up an SG.

Ive been given this SG by the guitarist in my band, as I have a bit more experience wiring things up than he does, and the guitar has been dead for a while.

Ive bought a list of gear, as the old stuff was rusty/corroded.

JB humbucker
2 seymour duncan 500k pots
sprague orange drop 0.47 capacitor
switchcraft jack.

he had a 3 way switch, fairly heavy duty, but not one im familiar with.

he would like to have the pup wired humbucker/off/single coil, so that he can do the tremelo effect by rapidly switching the the 3 way.

SO.....i took photos of the guitar before I stripped it.
I wired it up exactly the same, except with all new components.
It didnt work-no sound at all.

I tested the pup-that works fine.

So im left having a wiring job, that I have no plan for, there doesnt seem to be an option on the SD wiring diagram site, and its hard to find a diagram on google that doesnt have 2 pups.

So, if i posted some photo's up on here, would you be able to help me?
.

 

[oberonspacefruit]

Re: JB wiring diagram -custom diagram for a Gibson SG special- help needed please!





the original broken wiring as it was





This is the beginning of my attempt to wire it as it was previously wired, but didnt work-



So here is the raw hardware.



Any help, suggestions would be appreciated. ive done the pic above so someone may be able to pop it into a paint program and draw the wires on, or if not, you could say "500k pot A, tab 1 to 500k pot b, tab 3 " etc....hope thats enough information.....
Thanks in advance.....PIP

 

[AlexR]

Re: JB wiring diagram -custom diagram for a Gibson SG special- help needed please!

You're missing a ground between the 2 pot casings for one.

The second point is you have not got the jack or the volume pot wired right at all. Currently you have both hot and ground wired from the vol pot to the same tab on the jack. Straight away this means you will never get any sound. Take the grounded one off the switch lug and attach it to the other pot casing.

 

[oberonspacefruit]

Re: JB wiring diagram -custom diagram for a Gibson SG special- help needed please!

You're missing a ground between the 2 pot casings for one.

The second point is you have not got the jack or the volume pot wired right at all. Currently you have both hot and ground wired from the vol pot to the same tab on the jack. Straight away this means you will never get any sound. Take the grounded one off the switch lug and attach it to the other pot casing.

I see that ive missed a ground lead between the two pots.

In regards the second point, if you look at the original wiring, that is how its done-(a thin red wire, and the shielding around it) it seemed strange to me to but it allegedly worked like that.

seeing as i didnt have a diagram, my main plan was to copy what was in the original guitar-its all i had.
So...it should be like this?

 

[oberonspacefruit]

Re: JB wiring diagram -custom diagram for a Gibson SG special- help needed please!

ive found a diagram, that seems to show humbucker/single, with a mini switch, but the switch is not like the one i have.

 

[Gtrjunior]

Re: JB wiring diagram -custom diagram for a Gibson SG special- help needed please!

I’m no expert, but your capacitor is wired differently than the diagram too.
I know there are various ways to accomplish it so maybe your way is acceptable too....

 

[oberonspacefruit]

Re: JB wiring diagram -custom diagram for a Gibson SG special- help needed please!

I’m no expert, but your capacitor is wired differently than the diagram too.
I know there are various ways to accomplish it so maybe your way is acceptable too....

Yep, again, i was following what was in the original guitar that was apparently working once.

Seems i need to scrap any idea that the original was right, and just find a way of wiring the components that im left with. the diagram above seems like its near, but i cant relate that 3 way switch, that just has 3 points, to the one i have to work with.
Ive emailed SD too, as they dont have a diagram on site that has 1 humbucker, 1 voilume, 1 tone, 1 spdt switch to do hum/single. which is odd as they have nearly every other combination of pick up-much more complex.

 

[oberonspacefruit]

Re: JB wiring diagram -custom diagram for a Gibson SG special- help needed please!

shall I just buy a new switch and wire it as above then?

 

[oberonspacefruit]

Re: JB wiring diagram -custom diagram for a Gibson SG special- help needed please!

emailed SD direct, and got a hand drawn diagram but i cant understand the 3 way switch part, and there is no key to the 5 jb wires.......

 

[beaubrummels]

Re: JB wiring diagram -custom diagram for a Gibson SG special- help needed please!

emailed SD direct, and got a hand drawn diagram but i cant understand the 3 way switch part, and there is no key to the 5 jb wires.......
View attachment 92638

The green and bare from the pickup go to ground, any ground connection that is convenient and connects all the way to the ground lug of the jack. Hot/black in the drawing is the pickup black wire. The Duncan hand drawing is missing the red/white wires that need to be connected to the empty switch lug in the drawing for it to work as written on that paper. But it won’t work like you were asking where the kill was in the middle position. They drew it so it’s full humbucker - split - kill.

 

[oberonspacefruit]

Re: JB wiring diagram -custom diagram for a Gibson SG special- help needed please!

The green and bare from the pickup go to ground, any ground connection that is convenient and connects all the way to the ground lug of the jack. Hot/black in the drawing is the pickup black wire. The Duncan hand drawing is missing the red/white wires that need to be connected to the empty switch lug in the drawing for it to work as written on that paper. But it won’t work like you were asking where the kill was in the middle position. They drew it so it’s full humbucker - split - kill.

Thanks for the input beau, i think with that info, i can probably work it out, or at least an approximation.
thanks for your time pal!