In the wiring going to the oil pressure sending unit there is another wire. I can’t find where that wire plugs in to. The two wires are green one with white stripe and other has yellow stripe. Any help would be greatly appreciated

 

Is this for a 2019 Escalade? (I'll bet you'll get more useful answers if you tell us the Make/Model/Year/Engine/Body.)

In a 1994 Pickup with 3VZE, G-W could be the brake fluid level switch. Or one of the parking brake switch leads. Or the EGR gas temp sensor. (There's 25 "G-W" labels in my EWD.) G-Y could be another parking brake switch lead. (or 23 other labels) The Oil pressure sender is Y-L.

 

I bet it’s a regular toyota. Those irregular ones got shipped to third world countries.

 

On my 1987 Soviet Rocket launcher the green and white wire go to the rapid launch switch, the green and yellow wire is the ABORT switch.
DO NOT get these wires crossed!!!