I just bought a new kenwood deck and full installation package for said deck. Although, I noticed when installing the adapter wireline harness, the larger factory plug goes into the adapter, but there is a smaller second factory plug that needs to plug in somewhere, but there is no adapter for it nor is there a spot for it in the new deck. Does anyone know what this plug actually contains power or control to? Also do I have the wrong adapter? I have an 02 gtp. Thanks for everyone's help.