Electric guitars are all grounded as they come out of the factory, sounds like ground wire came lose on this and was repaired. Its not an "upgrade" just restoring it to a functional non-buzzy state. Unless you mean something entirely different, like your pickups have been waxed?
Electric guitars are all grounded as they come out of the factory, sounds like ground wire came lose on this and was repaired. Its not an "upgrade" just restoring it to a functional non-buzzy state. Unless you mean something entirely different, like your pickups have been waxed?