I can definitely confirm that the black tar substance was still in use when my pump rolled off the line. When I first opened the electrical box, I assumed it was tar used as a sealant at some point during its life cycle. Did not anticipate it was more of a standardized thing that way. Would the substance be fully and thickly lined throughout the conduit or would it be as simple as pulling the existing wiring and sliding replacement wiring through in its place? Hoping to avoid removing the substance as it sounds pretty nasty.

I hope to re-use as much as I can, but not at the expense of safety. I havent done a full inspection yet to see if the wiring is soldered onto the sockets or not. But safe to say, the main thing is removal of the old wiring. Here is probably a tough question, but does anyone know if new, replacement sockets are essentially the same design inside out or has there been some tweaks due to the passage of time?