Hey all, my first time here... I recently bought a used 04 alabaster coupe and noticed it has an 8th inch jack that says "audio input", but I cannot get the radio to switch to this input, even with high levels of input. I'm fairly new to the world of car audio, especially the crossfire, but I can't seem to find a thread with a similar senario. Any help would be delightful as cd's are so "old tech"