Wireless transmitters are just mini radio stations playing the music you want. As long as you find a clear station, you should be able to use it. The only problem is finding a station that is clear for your whole drive.
The other option is to find a new head unit with an audio jack. I know walmart sells one for 50$ and it also has a USB port to charge the ipod. They sell connectors but I'm not sure of the price off hand, but if your good with a soldering iron you can just hook it up like that.
The other option is to find a new head unit with an audio jack. I know walmart sells one for 50$ and it also has a USB port to charge the ipod. They sell connectors but I'm not sure of the price off hand, but if your good with a soldering iron you can just hook it up like that.