So I've recently bought a 2.6 auto and it from factory had a orthopaedic drivers seat, when I bought it the seat didn't work as one it has a broken switch which I can't find the part number and cannot find it at all on the EPC so would like as much help on this as possible as I want to get this seat working again. If someone could give me a part number or a link to one that would be very helpful. Done a quick jerry rigged test and all the bags in the seat work fine. I also need the correct pump as it's had the wrong pump put in at some stage which I have determined to be this one A1248002848 via the EPC. Can any explain the difference between the two, I know it has an extra outlet for the seat vacuum and the extra pin in the plug but what does the extra pin do and does it have a one-way valve in the pump for the seat?