Complex sentence: If the signals from any two of the wires were lost, the LES would activate automatically to fire a solid fuel escape rocket and open a canard system to direct the Command Module away from, and off the path of, a launch vehicle in trouble.
Split into simpler sentences: If the signals from any two of the wires were lost, the LES would activate automatically. When activated, the LES would fire a solid fuel escape rocket, and open a canard system to direct the Command Module away from, and off the path of, a launch vehicle in trouble.