One other question. My radio stations aren't coming in clear. I checked the antenna connection, and it seemed good. There was a blue wire that's labeled "power antenna", and it wasn't wired to anything.

I don't have a power antenna, but I was thinking on some vehicles it needs to be hooked up ?!?! I took the bare end of the wire and touched it to some metal and the stations came in clearer.

So any advice on that?!