I've got 6k HID's in my low's and fogs. My low's work brilliantly, but from time to time only one of my fogs will work. Then they'll mysteriously work again next time I start up the car. I know whether or not they're going to work as soon as I turn them on and both of them will go out... but not at the same time. I had to reverse the polarity on the driver side to make that side work initially, but didn't have to do that on the passenger side. Is that possibly my issue? Any and all help is greatly appreciated.

BTW other than this lil issue I love my HID's and they really were a breeze to put in. For the most part plug n' play.