where is the crankshaft position sensor on a 1995 Jaguar XJ 12 6.0 engine

What is your question?

I suspect the crankshaft position is faulty because thers is not spark on the plugs wires.I could see the timing chain turning by looking into the hole that is to pour the engine oil.

How long has your 1995 Jaguar XJ12 had this problem?

3 days