I bought an upgrade kit to upgrade from the Sync 2 to Sync 3. Overall the upgrade was pretty easy and straightforward. I did however disconnect the cd player/brain of the radio system which I didn't need to do to begin with. In doing so I broke the plastic connector and trying to fix it I completely tore up the tip of the cable. I'm going to have to cut off the end of the cable and replace it but I don't know what it is called, what to search for or where to search. Please help.