TheGremlin

As above, I'd like to mirror the source (often USB, but sometimes SIRIUS) to the rear output that I have connected to a cable which goes to the outside speakers (amplified). So it's audio only not video. Is this possible? I set rear source to mirror, the only thing I have hooked up is the cable form the rear audio output to the speaker, nothing comes out of it.

I have an Avic NEC-7100 installed in my motorhome and it's working great in general I really like it. The problem I'm having is maybe I don't understand how the rear output works. No matter what I select nothing seems to come out of it. I'm trying to connect just a regular aux cable out of it into a speaker that I can put outside and then here the music when we're tailgating but nothing I do seems to make any output come out of the rear channel (I'm trying mirror) Anyone know how to do this?