Our patented technology and design makes the process very simple. When your HogWatch arrives, it will come with easy to follow instructions. First, take your existing Harley Davidson key fob and remove it from its plastic case. Then, unsnap the back of your HogWatch. Take your Harley Davidson key fob circuit board and simply place it inside the HogWatch and snap the back of the watch on. There is no programming or reprogramming required.