I just replaced a low beam headlight bulb in a 4th generation Altima
and took pictures of the process to create a quick guide to help out
It wasn't as straight forward as replacing a bulb on a GM car where
you just unbolt the headlight and remove it, but it's easy once you
know how. The procedure should be the same for every fourth gen (2007,
2008, 2009, 2010, 2011, 2012) Nissan Altima coupe or sedan. I also did
a guide for the tail light bulbs at the same time.
Here are the guides:
Tail Lights -
I hope someone finds them to be useful.