Im hooking up my Bel LP905 laser sensors on my bike and was thinking of fitting the wide (rear) sensor to the front of the bike, above the headlight, with the 2x narrow (front) sensors under the headlight. What is the difference between front and back sensors? The front ones are narrow, but deep, the rear one is wide but shallow. Is the rear one a wide angle, short reach and the front ones a narrow angle, long range? Will they both work if placed in the front?