Embarrassingly, I can't figure out how to disconnect the Injector Pressure sensor wiring harness connector. Tried to get a picture but Verizon thwarted me.

It's a black 3-wire and connects vertically to the top of the sensor. It has a small rectangular hole in the top that looks like it might be the secret hiding place. I tried inserting screwdrivers in there but nothing happened. No other obvious means of opening.

Thanks for any help

Duh, I should have asked my son first! He got it in no time.

so what is the secret?

Basically, just squeezing it very hard. I guess the rectangular hole was a decoy.

Now on to the MAP sensor. I guess I'll try the super squeeze method on that first but it's a different type of connector.