I'd be happy to take a stab at helping you, but like SS says, tell me what is installed and any wiring you may have hooked up already.
When I had my '09 I installed PIAA driving/fog lights and used the blank filler next to the dimmer to install my switch, then ran wires out to the relays. Worked perfectly and automatically.
Also let me know how you want it to work so I can design the circuit the right way.
Pictures would be helpful as well, but not absolutely necessary.