Hi,
ok, this tow connectors are the connectors for the AUC (automatic air recirculation) and for a so called Adapter-Kabelbaum. This is a small part of wiring harness with an relais at the end.
The wiring harness is needed, otherwise the IHKA won´t work.
This is it:
It is relay K33 - once it was located in auxialliary relay box in the engine compartment but it moved to place behind the footwell somewhen end/beginning auf 94/95
greets
Markus