Lights? Do you mean traffic lights, or lighted signs, like in Times Square, as in, there s a broken heart for every light on Broadway? In either case, thousands.Good luck!
As of January 2006, there were 11,871 signalized intersections Citywide, including 2,795 in Manhattan, 4,100 in Brooklyn, 2,942 in Queens, 1,536 in the Bronx, and 500 in Staten Island.