Just out of curiousity, is there a way to get the fog lights to run without the low beams?

I would like to have them run when I have the running lights on instead of only with the low beams

(2015 is250 with full led headlights/fog lights)

 

stock fog lights? I don't think so.

 

run your own power source with a relay and switch. There's a diy in the 2is section, everything is pretty much the same.