PhilDY6 wrote:So why does it disappear when I touch the jack or the pot? Is there anything I can just try like swapping some wires or soldering a wire from one place to another?
Then, you are grounding it.
The wiring looks pretty bad, and the volume pot could be fried, since the element is burnt, but you could hook it up like a DiMarzio. I can't even see where the black for the pickup goes, and the green doesn't look right, but I would have to see the correct diagram, and I can't do it now. Anyway DiMarzio: RED (hot) to power, GREEN (cool to negative) BLACK & WHITE (opposites attract) together! That might fix it, it is the simplest thing worth a try. Normally, a fix is not that easy though.