Fitting electric heated seats to v220 (w638)

[dpazza]

I have picked up some heated, electric seats for my van. They are original fit to replace my non-heated manual leather seats.
Can anyone explain what I need to connect them. There is an electrical connection which is unused under the drivers seat, but this does not match the connectors on the underside of the seat?
Any advice greatfully received. I do have pics of connections / seat.
Thank you

 

[mioba]

Surely you also need the correct switches and relevant door cards assuming that’s where the switches are and associated wiring and relevant fuse box connections of course.

Look on the online parts diags for yours vehicle, you will soon see what’s needed to an extent.