This is a step-by-step video tutorial on how to keep up your guitar maintenance by tightening your cable input jack, a very simple but extremely important maintenance routine for your guitar. If you let the cable input jack loosen, it could end up costing you quite a bit for repair. First, you are going to need a 1/2" socket and a Phillips head screwdriver. You will need to unscrew the cable input jack. Next, use the 1/2" socket to tighten the nut on your input jack. Then screw the cable input jack back in...it's that simple!