Hi i'm new to this site, hopefully i can get some solution to my problem. i got an 03 M45 and i'm trying to install an after market cd player (alpine cda-9885) buy can't find any answer anywhere. i can't find any aftermarket wire harness any where too. i really dont want to cut the factory harness. if any one has done this installation or know where i can find an aftermarket harness please help ur infiniti brother out. thnx i dont really care about the voice control or the steering controls.

You will probably have to hack into the factory harness. It's doubtful many/any people have replaced the whole factory system due to it being so integrated into the dash. I assume you are planning on putting the stereo in the glove box or something?