The oil pressure sending unit is at the back of the intake manifold area on the left side. 'The connector 1 goes into the sensor.
You can reach it with out removing the intake. I posted a picture below. Connector 1 goes into it.
I have a picture. I will load it in a minute whenI find, it. Hold on.
Sorry for the delay. Below is a picture with the intake manifold off, but you don't need to take it off. It is circled.