I have bought a Maxima 2013 SV. The fog lights do not have bulb. I was wondering if it does not come with fog lights or it is an option? How can I figure out if there is wiring for it (in other words if I can install a pair of bulbs on it)? If yes, what is the best option and price? Can I replace the head lights as well as they are very weak (they are yellow)? What are the best options for that in terms of brightness and whiteness and price?

 

They are a factory option.
I bought some on Ebay $200, comes with the required light switch replacement and light housings.
The car is already wired for them, it's just a matter of doing a little wrench work.
Many here don't care for the wimpy stock lights and do an after market type thing. Look for the appropriate threads.
Good luck.

 

here you go bro. have a look at these options.

https://www.carid.com/2010-nissan-maxima-fog-lights/

http://www.autoanything.com/lights/20A50715A1.aspx

prices are good, but I would personally go with car ID.

 

I think the stock lights on our cars are just fine. H11 is the standard bulb. You can buy brighter halogen bulbs if you'd like that are still the "normal" color. The Maxima just has low aim for the headlights so it seems as if they are weak.

 

You can upgrade both the headlights and fogs to H9 bulbs with slight modification to the bulbs.