You could wire up your fogs how ever you want.
Just find the switch you want them to turn on with ie. hi beams, low beams, parking lights, **** you could even wire them in with your dome light or turn signals.
Once you have found the switch break the wiring down so you know where the power is coming from & where it goes. Now comes the fun part with relays & running your wires. There is going to be a power wire you are probably going to have to run to your relay, a switched/ remote turn on, that would be the switch you want your fogs coming on with. Then the wires to your fogs.
I don't know if you have any experience with wiring or electrical systems & it can be a bit much to understand. If your still wanting to do it your self go for it just know a lot of stuff can go wrong if you fuck up