cadillac srx rear dvd to aftermarket hu

I'm currently working on installing a custom interior into my project truck (1991 GMC S15 Jimmy). I'm using a Kenwood DDX-6019 head unit The center console in the truck is from an '05 Cadillac SRX. It has the factory DVD player and monitor (Panasonic) for the rear passengers. I'd like to be able to run the signal from the console to the A/V IN on the Kenwood head unit. Does anyone have a wiring diagram for the Panasonic unit or ideas of what wires I'll have to convert to RCA?

I found a post on CaddilacForums.com about someone doing this to add headrest monitors but it was over 3 years old and all the pictures were missing. He figured everything out by testing for signals and figuring out the wiring himself. I'm not that familiar with video wiring to feel comfortable doing it. I've posted a similar post there but haven't had any luck getting an answer. I contacted a friend that works at a GM dealership and he said to contact Panasonic. Panasonic says they don't have that part number in their records.

Thanks in advance guys!

Here's a few pics of the truck

Ya. I'm afraid that's probably true. If so, I'll be talking to the place I purchased it about a refund. After all, if what you said is true I wouldn't even be able to use this unit in another SRX. The other option I have is to remove the screen that's in it and replace it with one of the Kenwood ones I have. They're both the same size but the Kenwood one has a better picture.

If anyone has any other ideas please let me know.