Wiring Help

[zacks76930]

I am putting the wiring harness back into my 76 and do not remember what goes through this hole. It goes from the area in the trunk behind the fuel tank where the through-the-body sway bay is and into the passenger area behind the peddle assembly above where the battery/starter cable goes through. First picture is from the trunk side the second picture is from the passenger side. Any help would be greatly appreciated.