Anyone know the magic to get the wireless headphones to work that come with the dockable DVD system? Sound works fine through the FM connection and when undocked, the sound works fine thru the unit's speakers. But connected and not thru the car speakers, the headphones don't work. Checked batteries and made sure sitting in the back seat. Wireless headphones on Dodge required you to turn them on in the system but there doesn't appear to be anything to do that with these. HELP!!!