I know it's a lot of information to digest so here is basics:
The towing pre-wire is not a complete trailer wiring harness. It's just a simple 12V power plug/harness located in the cargo area. See the white plug below? This is all you get! My Rogue SL (and it appears many other lower-trim level Rogue's) was not supposed to have the pre-wire, but they did in fact have it.
What is the plug for? It's used to power Nissan's accessory trailer light converter... or many of the aftermarket ones.
So what do you need for your 'pre-wired' Rogue?
Nissan's Trailer Light converter/harness #999T8-GU000 . Price: $145
Or
Professional Wiring Products #64150, wiring harness/converter for 2008-2010 Nissan Rogue. Price: $47.95
This is the cheaper and preferred choice. A few members have already installed these and they work very well. Plug an play, no splicing.
http://www.professionalwiringp...770b0