My JVC Kameleon recently sh*t the bed and instead of purchasing a new head unit i took my girlfriend's Sony Xplod CDX-CA650x which worked perfectly fine. I got the unit hooked up to my Jeep Grand Cherokee and wired my amp and sub. The unit worked fine with the radio function including playing over the sub. When i insert a CD it begins to play but audio only comes out of my sub.
You hooked up the remote wire from the amp to the antenna turn on (solid blue). Reconnect it to the remote turn on wire (blue w/white stripe) coming from the head unit and you should be fine.