The Nissan terminal repair kit is Kent-Moore #J-38751-95NI and costs over $3000. I couldn't tell you what the individual part #'s are for the connector and terminals, but they would also be Kent-Moore parts #'s, not Nissan part numbers. I'm not sure what the Nissan parts guy was looking up unless he was looking up the wiring harness, which would be stupid as nobody is going to spend $500 to get just a single connector. I also don't see the connector being no longer available as it should be in the kit; you just have to get someone who knows about it and has the patience to look through it to find the right connector. That said, unless you have the pin tools, it's going to be hard to remove the wires from the old connector to put into the new one.