If you could find just the plug for the back of the stereo where the Honda iPod adapter plugs in it should be pretty easy to do since it's supposed to be the same plug for a cd changer you should be able to find one.
You would basically be making your own iPod adapter doing it that way.
Unless you just splice into the wires going to the Aux Jack. You would just have to make sure you didn't have 2 things hooked up thru it at the same time like 1 thru the splice and 1 pluged into the jack. It should be easy to do.
Here's how the Aux Jack is wired.
Hope that helps. If you're going to do it how about doing a DIY while you're at it for anyone else that wants to do the same thing ?
Good luck.
