I bought a pair of used (seller described as new) Power Aucostik Universal Headrest with monitors (Model Number: HD-7BK) from EBAY, but it did not come with anything else. Does anyone have these that can tell me more about it. I went to the website and downloaded the owner/installation manual, but you can barely read it. I need to know if it came with a A/V controller because it only has a wire with a mini-Din 6 connector.