25-03-15, 02:15 PM
According to the MOT check list in linky it wouldn't be a fail. On top of that would a 1960's car or bike have a flash function???? Most didn't and they pass.
http://www.motuk.com/Motorcycle_MOT_Check_list.asp
http://www.motuk.com/Motorcycle_MOT_Check_list.asp
Those are my principles...if you don't like them I have others.