Metra 70-7554 Wire Harness
2011 Nissan Altima
Crutchfield Customer Review (What's this?)
Only comes with the four wires that are necessary for basic functions to work, making people like me who want the steering wheel controls to work have to go buy another harness from someone who gives you wires in all pins.
Pros: If all you want to basic audio function it's perfect.
Cons: Leaves no room to take advantage of all the head units features, as most of the pins have no wires running to them.