Scosche CFDK6 Wiring Interface
Crutchfield Customer Review (What's this?)
An absolute must have if you want to retain factory amp and OEM under dash wiring harness connectors. Easy wiring and hook-up, with included instructions. I had a few difficulties in my own particular application but with Crutchfield's excellent tech support, those were cleared up immediately and now I'm enjoying my DOOM tunes!