to a site that has wiring diagrams for hooking up TV, DVD, DVR, VCR, TUNER etc.?

 

I just googled Wiring Diagram +TV and came up with something like this...

http://www.prillaman.net/ht_info_8-wiring.html

I don't think you'll get incredibly specific since every TV, DVD, DVR, Tuner, and so on are all different..... so you'll probably just find generic diagrams...

Also general info:

http://www.avdeals.com/classroom/plasmahookup1.htm

http://www.avdeals.com/classroom/pla...ngdiagram2.htm

 

This should help you out.

http://www.audioholics.com/techtips/setup/index.php

 

The Avia DVD helps out here also.
http://www.smarthome.com/9381.html