Quote:
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Ground wires go to the volume pot casing
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I'd amend that slightly. Ground is just... GROUND, it doesn't have a particular order. Pot casings need to be grounded, and some switch terminals need to be grounded, but they don't necessarily have to be grounded to each other
in a specific order.
This is particularly important when you're using something like a Superswitch & adapting parts of one diagram to another. Potentiometers can fry up pretty easily from the heat, and if you tried to connect ALL the grounds to the pot casings as shown in a particular diagram, you could kill 'em easily. Unsoldering wires from a pot to swap pickups or change a switch has the same effect.
I've wired guitars with Superswitches where you had 13, even 17 separate ground wires, and the easiest thing to do was to sink a little eyebolt in the side of the cavity and wire all the grounds to it. There's a guy over on the Warmoth forum who swears by "terminal strips" - something like this, though there are hundreds of kinds at Mouser Electronics & elsewhere.
Though I don't change pickups as often as some near-psychotic friends of mine with shoeboxes full, each of which they've tried for 2 hours, it does seem like it'd be easier when everything just unscrews.
P.S. There's diagrams everywhere, but the two places I look first are Stewart-McDonald & Seymour Duncan.
Free information, Understanding Guitar Wiring at Stewart-MacDonald
Wiring Diagrams - Seymour Duncan/Basslines
Sometimes you have to take a diagram from Duncan and use the Stew-Mac site to refigure the wiring code for a different brand of pickup:
Stewart-MacDonald: Free information - go to "Electronics, Pickups"
or you can go here and get all the wiring codes:
Guitarelectronics.com Inc. Color Codes