I have a Dodge Stratus that has an amplifier already installed. I am going to install an Alpine 9820XM. The problem that I am running into is that once it is hooked up I only get audio in the front dash speakers. I don't get any audio from the door or the rears. Is there a way to disable or bypass the amp or should I try to use it. The only info on the amp is the Chrysler name, and part number that I can't find anywhere on the internet and JA AMPLIFIER. Any help would be greatly appreciated.
James
