I have an 04 ES, with the infinity system.
my front right is blown, so i am replacing all of the speakers front and back. I know i need a code to unlock the radio once the battery is hooked back up.

But i can not find my radio's serial number. I pulled the radio, and on the top it has a Model number, Reference number, and a 5 Digit serial number.

Mitsubishi of Nashua, NH said that was not correct. and that it will generally be 8 or 9 characters. There is no card in my manual like others said should be there.

where else can i look to get this, because i am gonna need the code in a couple days