Dart 70' Parking/Emergency brake cable

I am installing a new e brake cable and can not figure out where it crosses the frame???? I see how it exits the fire wall and travels down on top of the frame, but there is no exit to the other side of the frame so that its heading towards the hole in which it mounts. Unless I am blind, I think mine must have been sealed up. Can you post a pic of how it comes back out from on top of the frame? Thanks