Not much to show really. Just take apart the radio bezel and remove the fog light switch. Once you take it apart carefully simply unsolder and resolder the new LED. I bought a 3mm LED from superbrightleds.com (79 cents or something)
I measured the stock resistor at 616 ohms, and I knew this would be fine for the new LED.
I guess the only thing you can screw up here is put the LED in backwards.