Re: Looking to install fog lights...
The factory didn't have fog lights. The lights that attach to the factory brackets are a driving light pattern. And only illuminate with high beams. The closest that you can get would be Hella 500 lamps. You can get FJ covers on Ebay or other sites. But run this via its own switch.
Myself or others can run you through the process if you are okay with doing electrical stuff.
I have Hella 550 lamps on my bumper, mainly used to illuminate the sides of the road and cornering.