The OEM 35 wire connector at the back of the HK on your bike won't have wires in slots 1,2,24, and 25. Those pin outs are typically used for rear speakers, but aren't on your bike as you noted. I don't understand your reference to the "label," but then I've never seen the wiring harness on the CVO RGU.
If you've attached wires correctly (i.e. left/right +/-) at those pin outs and not getting any sound, I'm with you and stumped since those pin outs are typically "live" and the only thing a dealer would do if it wasn't done at the factory would be to turn "on" the fader function--the pin outs would provide sound via speakers connected to them, but w/o fader control.
If you are referring to connectors on the harness that you've tapped, and not the 35 wire connector itself, then the problem is that the four pin outs referenced above haven't been accessed to provide the rear speaker signals.
Carl