It's tough to match up with RL entirely as the real one doesn't let you turn on the foglights independently from the headlights. (Main lights have to be on for the fogs to be active.) So I wasn't able to get a clear picture of their light cone. Also the driver's side foglight is out on my car so I only have the one side to work with... nevertheless I have the cone set up with about the right leading edge on the pavement, about the right amount of the front lip illuminated, and what seems about right for the horizontal spread. Let me know how this looks:
[LIGHT_EXTRA_4]
BIND_TO_EXTRA_A=1
COLOR=1, 0.8, 0.65, 5
DIFFUSE_CONCENTRATION=0.75
EXTERIOR_ONLY=0
INTERIOR_ONLY=0
FADE_AT=12
FADE_SMOOTH=5
MIRROR=0.62
POSITION=0,0.34,2.00
DIRECTION=-0.00,-0.20,1
RANGE=18
RANGE_GRADIENT_OFFSET=0.5
SPECULAR_MULT=3
SPOT=90
SPOT_SHARPNESS=0.5