[DJVC]

You really don't need the adapter unless you want to hear the door chimes and the low fuel alert. its just for pure saftey and won't stop you from using that nice Alpine you have. i have aftermart radio too and when i installed it myself the only wire you leave out from the factory wiring is the Green "Data" wire. i think that green wire also controls the dim funtion for our stock radio too but its unusable on most aftermarket radios.