Okay, I have a small problem. I have the V1 hardwired and plugged into the Main port on the hardwire harness. I put a 1 into 2 splitter in the Acc port, and plugged both my CD AND my mute button from Safe and Sound on eBay into it. For some reason the mute button 'overrides' the CD, making the CD not work. When this happens the mute button works, and so does the main unit. Any ideas?