I used a USA SPEC converter in my 05 4runner. I bought it at a local Circuit City for around $60. It come with all the cables. I have installed mine in the small opening infront of the shifter under the plastic cover. It took a bit of creative work but I got it to fit in there. It is completely hiddin from view. I ran the audio cable on the driver side to connect to my MP3 player. Here is a link of my post I did a few weeks ago.