I installed the 5000nex in my 2009 Dodge Ram with the PAC rp4-ch11 SWI interface. The radio powers on, plays CD,s and the radio works but, I am not getting any sound through the speakers. Is there a setting that I am missing that my be causing the problem?

Sounds like you got some wires not connected correctly. Double check your wires...

Yes double check your wires.  I just installed this unit in a buddys 2008 Ram and I mixed up the wires.  Check your wiring and I bet that iwll be the problem

Check to see if you have the premium sound system in your truck. It might be that the PAC harness is not recognizing the amp.

Also go to your audio settings and check to see if rear audio is set to on.

Thanks for the help. I double checked the wires and they seemed to connected correctly. I still had the problem so I disconnected all of the wires except the power, ground, the 4 sets of speaker wires and the Illumin wire. I still had the same problem so I went to my locel audio store and they said the PAC harness I had wasn't activating the built-in amp (I have the 7 speaker Infinity system). I bought the Axxess ASWC-1 and Axxess CHTO-013BB. I connected them up and I still have the same problem. All of the controls work, I see the radio station info come up, When I tried a CD the song name came up and the play bar is moving. I tried streaming from my phone which appeared to be working as well but, I can't figure out why I have no sound. Is it possible the head unit is bad or is there some setting that I am missing in the radio config? There is the mute wire that is next to the RCA wires that I didn't connect up. Does that wire need to be connected for the sound to work? I tried setting the rear audio to on then off. I turned off and on different settings in the unit but, nothing worked. I reset the head unit to factory defaults and still no luck.

Is it possible the PAC harness is bad?

Your PAC module is probably bad is my guess.