TO THE OP: You might also want to add that you hook it in to the LEFT wire (maybe im stupid, but I connected both wires together with the new wire that I ran to the brown parking light wire) and both the headlights AND foglights came on. I soon realized DUH, so I wired it to the left one, and taped off the right wire (after I cut it.. the Litegreen/Dark blue wire was TWO wires... I wired this in to the LEFT one) To the brown wire, you DO want to complete the circuit, so wire it in to the existing two wires, connect it (3 wires together).
ADDED BONUS to this mod..
If you have an alarm that flashes your parking lights when your alarm goes off (or if your stock alarm does, and I think they do) your fog lights will attract extra attention by blinking/flickering with the alarm. Also when you lock/unlock an aftermarket alarm, they flash. COOL! I love how my charger does that, and now when I remote start my truck, they will come on. Thanks to the op!! Works great A++!!