It's a little bit of a conversion. I have to keep the OCS from 2005 of course. The signal output is the same. It's still a transducer/feedback, etc.
Nissan never changed anything. Three wires, the same colour, going to a newer sensor, built into the rails of the seat. instead of the bladder. I think it's a fore and aft seating contact, to replace the bladder. They did away with the seat tensioner contact in the Frontier, all together for the OCS, before the model changed, if I recall.