Does anyone know of an indicator that allows a signal of a given length for Ninja Trader 7? I am looking for something that will allow me to know when there is a wick say of 3 or four ticks in length. Also some sort of alert or marking when two candles having the same wick length occur that are side by side?

No i dont... but you could write something via ninjascript to alert you of this. You could put this into a boolseries so you can call it in you strategy.