The ex installed a newer version of the INA-W900 it's about 4 years old and I can't remember if I used the DVD player since I get it back but he would have hooked it up. There is a switch connected to the radio and we had to flip the switch to activate the DVD player. does anyone have this set up? How do I get it to work? Seems like I've tried everything and I can't get the DVD player to work. Or what should I do to troubleshoot? The rest of the options work. Thank you and Merry Christmas.