I did this on my 03 Mustang. I simply pulled out the relay, then figured out which terminals turned the fogs on with my parking lights. I made a jumper wire and connected the 2 terminals. Now my fogs are on when I turn on my parking lights,(and turn on factory fog switch) and stay on with both high and low beams. I'm sure something similar would work on my JK. I may have to look into it tomorrow. If I figure anything out, I'll post it up.