i found it! i removed the panel on the passenger side. it is a fm modulator with a 13pin cable leading up to the dvd unit. i tuned the radio to the sation on the device and played a dvd and voila! i have sound coming from all the speakers. ahhhhhhhhh! i feel a sigh of relief and knowing this i can finally sleep well. now the question is how can i feed video to the front dispaly? hmmmmmm.