I know the knock sensor harness exits the at the back of the intake manifold. Can anyone tell me exactly where the connector is once the harness exists the manfold. I want to clean the connector and do a resistance measurement on the sensors before a change anything. I'm geting a code 0327,low signal, and there is no timing retarding occuring. I have looked all over for the connector but I can't find it. A picture would be great.