harley-davidson

I have a 2012 Road Glide Ultra I have changed oil-stator-regulator-air filter bike was running fine for about 4 hours now bike is sputtering and light is coming on can somebody tell me what you think problem is

This bike was owned by an automotive professional with 50 years in the industry. He was a bike owner for more than 55 years. It belonged to my father and he recently passed away. He owned a small collection of bikes and this one has a whopping 4,066 "broke in" miles on it. It had 1,777 miles on...