I think the fog light interlock stems from old school headlights and the 4 light rule.
But it makes absolutely no sense as OE "fog lights" which are typically called driving lights anyway are the least offensive to oncoming traffic and they typically do a good job complemeting the high beams. Which should be shut off anyway with oncoming traffic.
I typically set up the OE driving lights to stay on with high beams or all on with high/low/fogs.
Makes a big difference typically in the dark.
The 07 Dodge is programmed all on with the tuner that's on it. My Chevy work truck fogs are enabled with high beams with a diode added to the right circuit.
Anyone who hasn't tried it, I'd highly reccomend it unless you have superior night vision!
