I got myself into a pickle. I'm working on my 89 780 with a 4 cyl turbo motor. I had the motor completely out for some work, and on reinstalling the motor, I cannot seem to locate the wire harness for the crankshaft position sensor. The sensor itself is on the passenger side near the oil pan level, not on the top of the bell housing like the newer ignition system.

From the pictures I took (to try and avoid situations like this), the sensor plug is mounted to the rear passenger corner of the valve cover. The plug is 4 pin with three wires.

I have no loose wire harnesses and for the life of me I cannot find where the sensor plugs into.

Coincidentally, the engine will not even crank. I'm not sure if it's related, and I'm still investigating the no crank problem.

If you have a similar set up on your vehicle, I would appreciate pictures or a description of what the sensor plugs into and color of the wires. Many thanks!
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94 940 owned 20+ yrs, 330k+ miles; 93 940; 89 780; 05 XC90 for the wife; 07 S60 for the daughter. Sold 88 760 and 92 745T.