Just a question for water level wire.
The wire begin with female plug from emission harness who plug to the sensor male connector then go near the water temp sender sensor and connects to engine harness.
Engine harness have female or male connector?
I am building emission harness from beginning and this connectors from water level sensor are missing.

 

You can take a look at the wiring harnesses here or look at the wiring diagrams here. Here is the Body Electrical Trouble Shooting Manual.