There should be a cardboard divider instead of what you have there, looks to be metal. It hangs on the metal divider where the seat back hooks. You can the see the cardboard through the holes in the metal. If you want one you can get the divider from just about any of the suppliers.
In the post linked below you can see where the wiring comes into the trunk.
http://chevelleforum.org/showthread....ighlight=trunk