Putting LED's is a little tricky. Since they draw less current, your car might think a bulb is blown and cause the lights to act funny (letting you know there is a 'problem').
With exterior lights, putting in LEDs causes 'hyperflash' which makes your turn signals blink twice as fast.
You can get around this by modifying your flasher module. You'd have to look on a Nissan site to see if anyone else has done this. The problem with resistors is they can heat up and
could cause a fire.
I went with the modified flasher module route using amber and white Switchback LED Tower Bulbs.
Parking lamps:
Signaling:
Here is a quick video at night. They are also bright during the day. I know what your thinking; no I am not trying to impersonate a law enforncement or official vehicle.
The only draw back is that they aren't pure white, more of a bluish/white.
Interior LED's (map lights, floor, and rear door handles)
I wouldn't use LED's for brake lights though. Like everyone's said, unless you can fit a truck round light, they just aren't bright enough.