Honda doesn't make anything that's ready to go for this purpose. They do make an MP3/CD player and a Cassette player addition, but I'd like to use my own hard-drive based player, which has a regular headphone output (e.g. I don't need to install it in the dash).

There are some audio-adapter type parts that are required to use the above accessories but I don't know if a different RCA-input can be wired into them.

Are there any third party harnesses or aux-input kits that might work?

Thanks for any advice.