If you are asking about the xm antenna, run the cable to the back remove the molding around the cargo area in the back and run the cable up and put the antenna in the roof all the way back middle of the roof
if you have a sunroof you can also install in front of the sunroof or the back of sunroof
if you are asking for the radio antenna fm modulator,don't use it the audio is very bad when the vehicle is moving use a auxiliary audio input works in all Toyota radios
http://www.oemautosound.com/pc-340-1...2003-2006.aspx
good luck
