Product Description for AEV Procal:
Module Functions:
Large tire recalibration (Restores the vehicle's speedometer/odometer accuracy following the installation of larger-than-stock tires)
Axle gear ratio recalibration (Resets automatic transmission shift points to maximize the benefits of an axle gear ratio change)
Tire Pressure Monitoring System recalibration
Daytime running lamp activation/deactivation, and lamp location selection One-touch turn signal activation/deactivation
Engine idle speed options (Improves winch performance and battery charging capabilities by temporarily increasing engine idle RPM)
Steering wheel centering (Provides for spot-on steering alignment)
Clears Engine Diagnostic Codes

 

Fog lights can be yellow or white, it's more about the pattern and mounting location. Fog Lights are mounted lower and have a wider beam to project light under the layer of fog where driving lights will be mounted higher and have a more direct beam. That being said, I believe the JK has driving lights b/c they are generally used to fill the area between the front of the vehicle and the headlight beams. Either or, we all know what the OP was referring to.

 

Like a few have said, they fill in the space just in front of the jeep nicely. I usually keep them on and factory low beams and use my lightforce 170s as "high beams". It really helps to light up the country side.

 

Unfortunately no. They are controlled in the computer and there is no simple wire splice, computer calibration or jumper that can be done to override it. ~sorry.

 

Its a function on the AEV Procal

 

daytime running lamps yes, fogs on with hibeams, no. (at least to the best of my knowledge)

 

Now that I mentioned the darned AEV Procal, I ordered mine today from Dave. I need to keep my opinions to myself... It's cheaper for me!!!

 

ditto..... to be honest I never use my brights because it is darker than having the low beams and the fogs on

 

I can see the benefit of extra light on the road at night, but honestly, I see fine with just the headlights (low beams). I never gave much thought to running the fog lights to make MYSELF more visible to others, but I'm now thinking of doing that since there are so many idiots on the streets these days.
I'm also curious if there's any strange laws in California regarding this. Meaning, can I be pulled over for running "excessive lights" in conditions that don't warrant their use? I wouldn't be surprised.... Cali is a weird place.