Bike ran great last year, pulled it out and charged the battery turned the key on and the RPM´s started jumping around and the power just dies like the battery has been disconnected. Even the clock and trip meter go off. The bike won´t start, turn over, and randomly all power dies. Battery is fully charged so I think it might be a bad ground or something but don´t know where to start. Has anyone had this prob or know what it might be? ´83 Honda Sabre V45 VF750S