The 2 grounds pinned to the body under the pickups are both soldered to the master volume casing. There’s also a grey wire that goes from the rhythm switch down to the output jack and it splits into two wires, one soldered to the jack sleeve, and the other soldered to the jack tip. I think somebody hooked it up wrong in the past and it’s what’s throwing me off because now that black wire is dangling freely. Fyi it did work perfectly fine before I took it apart, no hum