This is a prewired harness for USA Gibson SG's. Carefully wired “50’s Style” and grounded with vintage spec buss wire for a great vintage tone. For import guitars you may need to enlarge the holes for the higher quality US spec electronics to fit and also you may need US Spec knobs (to accept 24 teeth split shafts).
Our Emerson Pro split shaft pots are made to fit USA Spec 24 spline push-on knobs. Some USA & Import Guitars will need new USA Spec Knobs as even some US makers use import spec parts which will not work with our pots. We recommend that you don't rush the knob install process. If your knob is too tight and is not going on ,slightly crimp together the top of the potentiometers shaft ever so slightly so that when you go to push on the knob you don't damage the pot shaft by exerting too much downward pressure.