Has anyone connected the Video in and Video out from there lockpick I have hooked up and external monitor for the back seat and then I am using the AUX 1 in for the VES option with my iPhone for video. The problem I am having is that the rear monitor has video with the DVD player and audio (it has a head phone connection for the kids) when I select the Aux I get video on the fron Stereo but only audio in the rear any ideas?