95 Beretta 3100 no start / crank sensor

OK Im working on a friends 95 Beretta v6 3100 for not starting. There is no spark. Im getting 12v to the Ignition Control Module (ICM) when key is turned on. According to the wireing diagram the Purple and Yellow wire that connect up at the ICM are for the crankshaft sensor. Now I followed the wires down they go between the back of the engine and the transmission and the wire just ends at an empty plug not plugged into anything. Now I looked and looked and cant seem to see where it plugs in. Can sombody direct me to where this sensor is?
Also if the purple and yellow goto the crankshaft sensor, then what is the sensor behind the harmonic balancer with the 3 wires?

I found where it goes. Now I know why I couldnt see it. It was gone? How could it have just fallen out? The bolt was actually still installed but the entire sensor was gone.

Did you ever find out were your crank sensor went. Or if it even was supposed to have one or not? On the berretta you were working on for your friend.