I bought the PIE Aux Input for my S and after 3 days decided that I could not tolerate the stock head unit and swapped in my Kenwood from my truck. I think the adapter will work with any 98 and up Honda but go to the Logjam electronics website to be sure.

I think I paid $75 with shipping. I will install it for you for that price. If you just want to take it and go, make me an offer. Installation is easy, so don't let that scare you. You will need the cable (RCA L&R to mini-plug.) I am going to keep mine until I decide what I am doing with both vehicles for stereo.