Wiring diagram - 87 Carrera

[Kurt S]

Does anyone have one of these or know where I can get one? I have a mystery plug under my dash that isn't connected to anything and I'd like to see what it is. Its black, round, has four female connections in it, and there are two black spades on the plug, one on each side of it. I don't rememember all the wire colors offhand but one of them is red/white.

Thanks

Kurt