SRAUDIOWORKS is correct. Unfortunately the Revolution 2 control box is not outfitted with an audio out jack. This is to keep our installation procedure streamlined and it also helps the installer of the product keep the installation time way down by not adding any additional wires or having to pull the dash apart. The system does, however, utialize a wireless FM transmitter which works extremely well. I know its not a direct signal but it more than serves it's purpose!!
-Law