Wires in rear trunk

Does anyone know what this terminal box with wires going inot it is for or where it attaches to the body? I hope the picture shows it well. There are also 2 much longer wires coming from the same harness that I don't know where to put. Any help is much appreeshed. FYI, my rear lamps and license plate lights are hooked up properly.

Here's the trunk pic-


Here a recent car pic-

[JP Noonan]

Pretty sure it is for a Euro rear red fog lamp relay. Not positive though.

[RustyWa]

I can't tell from the picture and I don't remember what year your car is, but could it be the CAT relay?

Just a guess.

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Eric
'75 914 2.0L