I have the stock head unit with a FM transmitter that plugs inline with the antenna cable. If you have the head unit that takes the optional cd changer you can wire your Isquab into that input. I am using a little unit from Magnolia in Bellevue that I believe Chris in the install dept put together for me with a Ipod cord hard wired into a transmitter and power connections, sweet litte unit. Stop by and ask Chris, Donovan, or Bob about my Dodge they should remember the guy with the boat, and silver dodge. Oh, and I have an Alpine PDX powering a Pioneer pancake 10" under the passenger seat, takes up zero storage space and you've heard it, it rocks! I wanted to keep the stock head unit and not have anything that anyone would want to break into the truck for visible inside the tow rig!