ImVehlm or Improved Vehicle Ligths mod, is simply a mod that improves your lights and makes them closer to reality. This mod is available on Single Player and works on SA:MP too.
Added stuff:
C+1 for the inside camera;
C+2 for moving the inside camera;
C+3 for resting your char's elbow on the window;
Z for left blinker;
X for hazard lights;
C for right blinker;
J for the fog lights;
G for the high/low beam;
Shift to turn off the blinkers.
How to install: