Dangling connector underneath the steering column

Greetings,

Whilst checking if the knee bolsters could be removed to reveal a cleaner dash, I discovered a loose connector hanging about underneath the steering column. Image Unavailable, Please Login
it has only 2 ports active:
blue with yellow line
yellow with black line
Does anybody know what it's purpose might (have) be(en) ??

 

By the way: Whilst down there I found a reason for mediocre airflow of the AC/heater unit:

The convertible has NO REAR vents.... still the outlet for the hose to reach those vents in the Coupe version is in place.
Now in my case that tube was just open, heating or cooling the mechanics of the gas pedal...
Something Cabriolet owners might want to check.
Image Unavailable, Please Login
the tube points forward, in the background above ^^^^^^^^^^ you can see the manually operated vent for the footwell (pointing downwards)

Call's for Ducktape...