i had my lights down on my 92 firebird and was checking the lights makign sure they all stil lworked as i had been doing wiring repairs and such and clicked on the high beams and the fog lights turned off. i dont know if its saposed to do that but if it is VERY neat feature. but im just an adhd kid anything shiny perks my curiosity haha.

 

The Fog lights do shut off when you turn on your high beams
It's pretty epic

 

these cars man they were so ahead of their time they were 2 generations in technology ahead of the fox bodies

 

All cars with factory fog lights do this. Fogs go off when the hi-beams come on. Its a federal safety guideline. Aftermarket fog lights will not pass state inspection if they don't function this way as well.