Hey guys. I have a 2010 Toyota Camry Le. I’m installing fog lights on it. It has the pigtails behind the bumper for the fog lights. I’m trying to find the plug for the switch that goes in the dash. I have looked behind the little knock out for the switch but I can’t find anything. Does anyone know where it’s located. If not I’m going to have to throw a harness in it.

 

So this is my opinion, install a new harness for them.
I say this because trying to tap into the factory harness begins the journey of finding out where it goes, what relays, what plugs under the dash, etc.
It will be easier and quicker to install a new harness and most fog light kits come with a wiring harness.
If someone else has tapped into the factory harness though then they should chime in.
I've installed about 4 different fog light kits in my time and installing the harness from the kit has always worked just fine and been the simplest option.