It looks like the wires are pretty much all there going into each socket. It looks like the harness that came with mine. They just spliced the wires together going out to the sockets. I had posted a schematic I made up of the 2972E a few years ago here:
http://videokarma.org/showpost.php?p...2&postcount=20
The wire colors and connections on the 12-pin B&W socket and 14-pin Color socket are in the upper left corner of the schematic.