Her Explorer came down with a case of the spun rod bearing. So, we bought her a loaded 2005 yukon XL - leather, heated seats (hey, it can get chilly in south texas), DVD w/wireless audio (RSE), quad captain's chairs... questions: 1) we're going on a 10 hour road trip and I want to run the modded xbox to the DVD system via aux input so we don't have to keep switching DVDs around for the kids.. what type of inverter should I buy? And, should I hardwire it to the battery? Is that difficult to do? 2) are there any aftermarket wireless headphones I can buy? It only came with one. thanks alot.