I don't know how your bulbs look, but in my Subaru I replaced just the bulb part with a replacement 12v bulb from Radio Shack. I was able to take the little bulb out of it's mounting and rewrap the wire around the base and make them work. The dealer wanted $9 per bulb (with the little base) and I got a pack of 12v bulbs from Radio Shack for $1.49.

Similar to what this guy did on ScoobyMods.