You may want to check posts by rixmo and jerseyparts (or is it jersey parts) for advice on iPod installation and cabling questions. Or you might want to send them email or private messages. There has been a good amount of discussion on this subject
That is not what we bought. That looks like a wiring harness you'd get from Best Buy to add an aftermarket radio. The one we have been discussing is a complete harness (with both ends) and an IPOD "brain" with an IPOD cable all in one kit. You can only get it from a nissan dealer and we've been using YourNissanParts.com as they have been the most helpful on this site.