Chevrolet: chevy 2000 video cassette player, video cassette player, warner brother

Question
I have checked the fuses for the video equipment and they are the right rating and good.. what about a schematic wiring diagram or such for the entertainment setup. Anxious but threading cautiously.   Ron  
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Followup To
Question -
I recently bought a 2000 venture warner brother edition van. The video player seems to work i.e. the tape advances, rewinds etc, however nothing shows on the video monitor. It does not appear as if any signal is going to it.  Any ideas?  Can you point me in the right direction  if this posting is inappropriate.
Answer -
Ron;
   I can only think for you to check the fuses for any blown one and look for any wire that could be unpluged  or broken.I would look real good as something could have come loose or a fuse could be bad check all of that first.

Answer
Ron;
  Hi- If I were you I would write to the co. and ask them for a manual for the system, they should send you one.
Ron have you tried to run a hot wire to it and see if it works that way , also did you check the ground ..
I would try to run a hot wire to see if it works.  ok
and ground it.