These are the door harnesses for your X7 that I think you want. You may be able to get the plugs themselves separately, but these are the complete harnesses.
I had a good look through the repair connections catalogue & cant see these listed. The seat plug looks like special airbag connections (designed to short when disconnected) so unlikely these would be available anyway.
As for the door harness, pretty much all of the other connections & terminals are available separately apart from the main round one. On older PSA cars with the twist type door to body connectors these are available as separate terminal but not on that newer slide lock design.
Thank you for your time.
Can you name the seat small and wider pins number (both male and female? (not the airbag pins)
Also the door pin number male, female.
I would like to add extra stuff into the door panels + retrofit electric seats and wire it correctly.