power door lock

hi ,
i am new here..
i have aveo 2008 LS.
i try to install keyless key that come from ebay...
my problem / question :
1 . for now i dont have a alarm system..but somehow when i down the driver door pin all the doors are lock ,
so it must have a unit or something that make the doors lock . but i cant find it...
2. i see in other posts about kick panel near the driver.. i see there molex with color ( black ,yellow...)
can i someone can told me what they belong ? so may i can use them like turn light singal or something else .
3. i also buy a auto power windows...but i cant get how to wire in the car ?

need help..

best regards ...