2003 trailblazer ext w/sunroof dvd player

would anyone be able able to tell me how to connect an OEM dvd player for this vehicle.  The harness has 3 wires. Black,Yellow,Orange.  The vehicle that i bought does not have a dvd player so I got an original overhead but i do not know where to connect the wires to. 

I purchased a dvd from an 03 rollover without a sunroof.  Right now i have the pigtail that was connected to the dvd unit and it had 3 wires. My problem is i have an 03 Trailblazer LT/EXT sunroof, homelink, bose single cd player, onstar, steering wheel controls.  How can i wire this unit?  Please help

 I also purchased a dd unit for the hu area. my problem with this is how do i go about connecting the factory harness to the new unit without losing any features on my truck. This is what the unit looks like

http://cgi./7-DOUBLE-DIN-CAR-DVD-GPS-TOUCH-SCREEN-BLUETOOTH-IPOD_W0QQitemZ200344528670QQcmdZViewItemQQptZCar_Video_Navigation?hash=item2ea576e71e&_trksid=p3911.c0.m14&_trkparms=72%3A1205%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1307%7C301%3A1%7C293%3A1%7C294%3A50