Ok guys so I've almost got this double din figured out except my wiring harness. I found a thread this guy made on charger f o r u m z about these and this is what he was saying. for 06-07 models the way to know if you need the $20 harness or more expensive harness is if you have a factory amp or not. Is that true? He also mentioned that if you want to see look up under the hood release lever under the driver side dash and shine a flashlight up under and you should see a silver module which is the amp. True or false?