Wiring grumbles part 2. So the volume knob now is buzzing it's face off when I touch it, and to a lesser extent the neck pick up when I touch the rails. I have pulled the volume knob earth's off, cleaned the earth points and resoldered again and still the same issue. The pots are cheap ebay items and it's not the first time I've had one be a bit shite so will rewire the thing again tonight. I was using the guitar electronics diagram initially, but after reading sd and gfs wiring are interchangeable, I downloaded this one. Question is, it seems the neck pup is switched at the tone, and the bridge at the volume. Is this correct? I would rather have the neck tapped at volume and bridge at tone.
GFS colour-coding doesn't match SD. SD has black as hot and green as ground, whereas GFS has green as hot and black as ground. They do have the same pairs, black-white for one coil, red-green the other, but you'll need to convert the diagram to use it.
And yes, that SD diagram has the neck split on the tone and the bridge split on the volume, but it will be easy enough to swap them. I think from memory that the SD pups use the red-green pair for the south/adjustable coil and black-white pair for the north/slug coil, so the splits in diagram above is taking the slug coil from the bridge and screw coil from the neck to give you a hum-cancelling pair in the middle position. I'll have to check how the GFS rails are setup (will add link here).
To wire up your GFS's like the above, but with the volume splitting the neck and tone splitting the bridge, do this:
Bridge pup green to the 3-way (instead of black) and black to ground on back of pot, red & white to tone push/pull.
Neck pup white to the 3-way (instead of red) and red to ground on back of pot, black & green to volume push/pull.
I think that will work and give you a hum-cancelling pair in the middle position. Make sense?
(If you've got some clip leads it would be a good idea to test the split hum-cancelling pair by clipping the bridge green together with the neck white and connect that to the lead's tip and clip the bridge red together with the neck black and connect that to the lead's sleeve/ground.)
Just unsure of the switch wiring. Also to note, I tried to earth the pots to each other last night, just ran a piece of solder from the tops of each pot, and that killed all sound.
Yep, looks pretty close to me. The control plate itself will provide the ground link between the pots, so that's ok, but your sketch is missing the wire linking the switch output to the outer lug of the volume pot. Other than that, it looks fine. It should mean that when both pickups are split in the middle position you'll have the inner coils active as a hum-cancelling pair.
Couldn't help myself... GFS colours with push/pull splits (volume splits the neck, tone splits the bridge).
I used the volume pot as the common ground point, but you can use the tone pot if you want. It's for a CRL style lever switch, so if you're using the stock/import switch it'll be different. Let me know if you're unsure.
The pickup bare shield wires also connect to the pot's common ground point.
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