electrical 91 spider

Hello, I am in the process of swapping out a bad 1991 column switch for a previous series model. Also changing the steering wheel. I connected the wires from the old switch (left them in the fuse box and just cut and spliced the new wires in) They all match colorwise. The headlamps and the turn...

This is in the rear compartment behind the passenger seat of a 91 Spider. Should this be attached or have a terminator or cover. It isn't appearant if it should be connected. It is the black connector with four prongs inside the plastic housing. Can anyone shed some light on this?