I bought mine online at superbrightled, model number WLED-xHP15-TAC. They're about 7 bucks each. Just remove your old parking lights and pop in the new ones and they'll work great. The only problem is that because they're LED, the car will not detect a light bulb there so it will show a warning instead of the "check ok". Another issue is that because they have no resistance, when you shut the car off, the current trapped in the wire will still go through the lights, making them flash, but after about 20 seconds, it will stop.
I changed every light on my 07SC to LEDs, when I lock my car, all the LEDs starts flashing like a emergency vehicle for about 15 seconds :cheesy: I just take that as added security measures so no one will want to touch my beautiful car