Hello, I just bought my first Harley. A 2014 SGS. I trailered it home and the alarm was going off for almost 3 hours. I have never owned a bike with such electronics. My previous bike was a 2005 vtx. No frills. Anyway everything was working but I drained battery down to nothing. I charged battery up for about two hours. The volts on battery read 12.4. The bike will start up and run, however the infotainment screen is just blank now. No warning screen or anything. It worked prior to battery dying. There is no clock or anything on screen just black. Any help would be appreciated.