That looks like an original JBL wiring kit (for a change). I guess Sam will be able to tell.
Good plan on the Subwoofer. It will be a good buy. But maybe you should look at other options for the HU (Pio/Kenwood/JVC/Blau, for all those features). Sony is best avoided.
__________________ Alpine 9887 | TRU Tech S44 | Image Dynamics XS65 | Image Dynamics IDQ12 D2V2 | Connection Audison |