I got one. My Cobra unit came with an inline fuse on the power wire and then just a ground and I was done. I also used a glass mount antenna on the back side window that just looks like an old fashioned cell phone job (I barely notice it's there). Just make sure you use real 3m double sided tape. I stuck the antenna on with just the tape the came with it, and it and my friends both fell off.

I like mine. I mounted it into the center console and you can stick the handset back inside and shut the top and you'd never know it was there. It has a speaker built into it and jack for an external one if you wanted it. A buddy of mine got one for his Protege5 when I got mine. They're nice for taking trips cause it's basically like they're in the car with you. I think it cost us around $100 for everything and the range isn't bad. On a good day, we could probably get 2 miles out of them, but I'd say a mile is more average, more than enough for two cars going the same place. I turn it on and BS with truckers sometimes when I have to make a long trip alone, but I haven't done that in a while. Here's a pic of my setup.