hi, i'm 16 and i recently bought a 03 g35 sedan, and i have a question about the headlight, in these, where it have the daylight, it have a little bulb, and it never turn up, what it is? and why it dont turn on?

 

is called clearance light and probably is burn

 

ok and what this lights are supposed to do?

 

Sort of a parking light. They lght up in the reflector when oh switch on parking lamps.

In 2005, they were remOved in favor of a traditional parking light using a dual filament turn signal bulb

 

OP I think you're talking about the driving lights that stay on all the time. You crazy Canucks have to deal with some stuff us southerners don't have. This is one of those things. As mentioned your bulb is probably burned out.