To be honest it was pretty easy,but it was my first time playing around with a car and installing something,so it took me about two hours.Don't get me wrong,most of the time I was reading over instructions to be sure,because one slight thing can ruin it.Anyways,I'm proud to say,it all worked on the first try.Thank you to all the help I received here on G35driver.

Items Used:

PAC AAI-NIS2 --- Bought on eBay for $64
Monster Cable RCA-to-3.5mm (8ft) --- Bought at Fry's for $16 (I bought the expensive kind for better quality,there is one for $5 by Matix)

I don't use a MP3 player,but rather my Samsung Eternity with a 2GB Micro SD Card
Samsung Eternity SGH-A867 --- Bought at AT&T store for $129.99 minus ($50 Rebate) = $79.99
Kingston 2GB Micro SD Card --- Bought at Micro Center for $16

I will put pics up later.
Thanks for reading! Happy Installing!

 

Congrats