Be aware that the factory CD-tape-radio head units are rather fussy when it comes to
playing home-brewed CD-R discs.
MY OEM Infinity head was hit-or-miss with CD-Rs and most times it would eject them
and display an ERR message (Error). On very, very rare occasions it would be OK with
CD-Rs and it would play them, but then it would reject the same disc on other occasions.
One day, the unit died altogether and I replaced it with a same model Infinity that I
grabbed from a self-pick yard, but this one hates every CD-R I put into it and will not
play them at all. Its OK with official, store-bought, CD music discs however.
Also, none of the OEM Infinity units have an AUX jack for playing an iPod (or equivalent)
through the system.
I just thought I'd throw this out there for you to ponder.