Congratulations on your new bike goalie31, and welcome to the org.
I have heard of that issue regarding the LED flashing rapidly, but do not recall the fix...(I want to say it was due to having regular bulb on the same circuit, but I really don`t know), if you don`t get an answer in this thread, just ask the question in a new one, as I`m sure someone can help...if they see the question.