i had hids in my fogs until i was putting my xtc cai on..my dad installed my hids for me and didnt have a clue where to put the driver side ballast so he screwed it into the airbox where the water runs out of ( i think thats what its for) and i pulled out the box and my fog light bulb busted into a million pieces ..sry if this story makes no sense i just woke up