I just installed a used RB1 in a '02 T&C with Mopar Sirius installed at the same time. The unit powers up and changes function, but there is no audio or audio control. The volume and tone functions do no operate. I then swapped units with a working RB1 from my Liberty and it functions perfectly in the T&C. The new RB1 does not work in the Liberty either. Is there a "re-boot" function in the RB1 or do I have to go back to the seller for a refund and start over?