I just wired up my Pioneer DEH-P6500 to support ipod/mp3/anything with a headphone jack. I know it sucks for us people with out a 3.5mm jack built into our headunits, so this was extremely helpfull.

http://www.stereophonik.com/gutterslide/IP-BUS_Hack/

Go there and be happy

I got this to work perfectly. Sounds 1000X better than using an FM transmitter. Id show pics, but Im currently using my blackberry to listen to my music

opps... just realized that someone already posted something similar back in 06. So this is for people like me who suck at searching

 

I bought the same thing on eBay, but it's alot nicer and was pretty cheap. Thats cool, but IMO just buy the eBay one.

 

i bought the ebay one a while ago,a nd have it hooked up to my deh-p6500, and i love it