Zanussi ZDE121 Dishwasher detergent device update info req

Hi There
Zanussi ZDF121 DW pnc 911 519 009 00
Replacement part no 407 13 58-13/1 The old 1 just has a coil working it.

The new 1 Has A Reed switch(small board) For the Rinse Aid Display.
On This Particuler Model There Is no Rinse Aid Display not even in the owners manual only end of program indicator.
the following instructions are

On earlier models the reed switch was connected with the cable treeby two plugs tags 6.3mm . here you must connect the cable tree with the adapter.
the adapter may may be plugged on the reed switch in both directions.attention the connections for the coil and reed switch may not be mixed up with each other ..
❓ Do I Have to Connect the Both up together or Does it not Matter because there no rinse aid indicator on this particuler model.

Thanks paul