My Warmoth has an audio taper push-pull tone pot (an Alpha pot labeled A500k), which means the tone stays wide open almost the whole range, and then abruptly drops off to nothing. So, I ordered a linear taper pot (Alpha, labeled B500k) to replace it, and last night got around to trying to wire it up. Hilarity ensues.
I figured it'd be a simple matter to desolder one wire at a time and wire it to the new pot. Nope. I started, and accidentally desoldered most of them all at once. No big deal, I figured, I'll just pull up a wiring diagram online. Turns out, I think we cobbled together a couple diagrams to get this one up and running, so I couldn't find anything that was a good match. So, I just winged it.
I then went through the following permutations:
- Wiring that worked when the tone pot was loose in the cavity, but when it was bolted in and touching the conductive shielding paint, silence.
- Wiring that produced sound, but gave me the humbuckers when the tap wasn't pulled, the bridge as a single coil and the neck as a humbucker when tapped and the tone open, and the neck tapped and bridge tapped but somehow sounding different (maybe a different coil) when I rolled the tone back.
- Wiring that worked, but was clearly not grounded right and produced a ton of radio interference when I touched the guitar, but only with the volume off.
...and then, eventually, wiring that worked, but STILL had the tone wide open until the very end of its range, when it dropped off to nothing.
I left it there for now. I THINK this diagram will give me what I want if I just gut the thing and start over, but I can't for the life of me figure out what's going on with the cap at the tone pot - it looks like it goes to the body of the pot, and then a wire from the top lug grounds to the body as well, and then goes to the body of the volume pot?
Guitar Wiring Diagram 2 Humbuckers/3-Way Lever Switch/1 Volume/1Tone/001