Help: 1989 Nissan 240sx SOHC ka24e engine harness.
 

So i’m trying to remove my engine harness, but I realized there’s a Y in the harness near the fire wall & at the bottom of the Y, the wires don’t have a plug or anything. It goes into the chassis harness look to the front of the bay near the core support/headlight area on the passenger side. Anyone help on this to what it leads to or what is? thanks. Car is automatic swapped to manual.