2000 Vanden Plas XJ8 fuel sending unit wiring on tank

Need help with the wiring of my sending unit at the tank. I took the tank out to change the fuel pump but when I replaced it one of the sending unit wires became disconnected from the car itself, not the tank. I know where both wires connect on the tanks sending unit.

There are two wires one brown that feeds into the wiring harnesses in general and I cannot ultimately see where it goes but that is not the issue. The other wire is black and about 18 inches long with the connector to the sending unit and on the other end a male push connector. That is the problem I have no idea where I connect that male push connector side of the wire into a fitting in the car.

Please se help me know where to connect this wire

Thank you in advance for any help.

Dave

ok I found out that my disconnected sending unit wire goes into the BT4 plug through panel 54-way connector which is located above the passenger side of the car between the top of the gas tank and rear dash in the trunk.

My issue is I cannot find on the electrical guide on this link where to push that one wire into that plug. So can someone tell me the location in that plug the two holes the 2 sending unit wires needs to go. I will attach some stock photos of the plug to eliminate confusion