2005 pontiac montana wiring

to velocity motors (jeff) it seems as if you are the guru of wiring know how. i have seen the wiring codes that you painstakenly wrote for a question about the 2003 pontiac montana. i have a 2005 montana with rear seat entertainment and after the dealership replaced my cluster the sound for the dvd doesnt work, it works with the radio. the sound for the dvd will only work thru the headphones. i press aux. as i always have but "RSE OFF" is displayed on the radio. when the dvd is playing a picture of a headphone is on the rear control screen. i dont know if that is suppose to be as i never noticed it before, but i thought i would add that in if that means anything. the dealer is now out of business and pontiac has closed my case 3 times stating they were told each time from the dealer they were working on it. this happened jan of 2008 and i have tryed getting resolution and pontiac now wont reply after they told me they cant do anything about it cause i have npo proof the dealer was at fault since they are now no more. so do you know what the problem is and is the wiring codes you gave for the 2003 montana the same for the 2005. also do youo know a more detailed schematic for my vehicle? thank you for any help you can give. why i am wanting to fix this is, i have 2 headphones and 4 girls. that math anywhere in the world equals a battle every time we get in the van.