Hi
I recently bought a 300CE and changed the passenger side presenter, which now works ok, except it always presents, whether there's a passenger or not, and retracts after about 30 seconds. The driver side retracts as soon as the belt is buckled.

I guess (please correct me) there are 2 switches, one to detect pressure on the seat, the other to detect the seat belt in the buckle. I suspect these are in series, the seat belt switch normally closed, and the seat pressure switch normally open. The passenger sits down, the belt presents, engage the belt and the circuit breaks, and the belt retracts.

Can someone please confirm/correct my thoughts? A bonus would be the part numbers of the switch(es).