AudioVox HRDV700.. Please help

Hey guys quick question for other pros out there;  I just got in a few of the new audiovox headrests with the built-in DVD and slave monitor (HRDV700) and didn’t realize that they didn’t give you a video/audio out from the DVD so you could slave additional monitors.  Called audiovox tech support to find out if I could tap off the harness to add rca outs…  They said that they know that some people have done it but the wouldn’t tell me how…  Anyway if there is anyone out there who knows how please let me know…  A fair amout of the SUV dealers we do work for want the built-in DVD headrests and a slave dropdown… 

Please help

thanx

I don't understand why that always happens when I post...  Anyway, quick question for other installers... I just got in a few of the new AudioVox headrests with the built-in DVD and Slave monitor (HRDV700), when I ordered them I assumed that they had Video/Audio outs so you could slave additional monitors but the don't.  Called audiovox tech support to find out id I could tap off the harness to add RCA outs.. Was told "no" but that they know of some people who have done it, but they wouldn't tell me how...  Anyway if anyone out there knows how to do it please help...  A fair amount of the SUV dealers we do work of want the headrests with the built-in DVD as well as a slave dropdown...

Please Help

Thanx