I was nervous drilling into this $200+ item . I couldn't find any step by step directions just finished shots So I took lots of pics and it turned out great! First off Take your old tail off and move your wiring out of the way . I was installing a Tiger undertail also and didn't want the wires to show so I moved them outward . MAKE SURE YOU CAN GET TO THE HUMP LOCK BEFORE PUTTING THE HUMP ON