picutres of it would help a lot.

 

my Alpine disc changer was able to hook up to my stock deck w/ the help of some cable... it went from ai-net to some Din cable... i'll get pics to show you what i mean in the morning... kinda tired, achy and scuffed up from having a marker war with some girls

but yeah pics, serial numbers, of your headunit and changer will help, but if its the one i found on audiovox's website then you might be outa luck for changing the frequency, or hooking it up to a headunit (it might work, by unplugging it from your changer controler unit, and plugging that cable into the headunit)