I did this mod on my 2014. I know 2013 is the same. Other than that I am not sure. This mod will allow you to turn your fog lights on whenever you want not just when the low beams are on. This does work with the key out so don't forget to turn them off.
wire terminal crimpers
heat source to heat shrink
2 red t-taps (must be red, blues will not work)
2 red male spade terminals with heat shrink
1 1n4001 diode
First step is to assemble the diode. Put a spade terminal at each end of the diode so that the heat shrink will cover all the exposed wire on it. Crimp and heat shrink them. You should end up with this
Next under the drivers side dash there is a kick panel that needs to be removed. First step to that is to take 3 clips that are circled out.
Next you need to unsnap the OBD2 port. Just squeeze the ends and it should come out.
You should be able to move that panel out of the way now. Next to the steering column you should see the body control module. the 2 connectors closest to the firewall are the 2 that you want
The red arrowed connector should have a Violet/Yellow wire and the blue connector should have an all white wire that you want to attach the t-taps to.
Now you just have to attach the diode to the 2 t-taps. Make sure the white stripe on the diode is toward the white wire.
That's it. Now put your OBD2 port back in the kick panel and reinstall the kick panel. Here is the end result