Fellow members: I'm installing a new Kenwood deck and have spliced the appropriate after market wiring harness to the new decks's harness and all is good and tested in the vehicle. There was one wire (purple with yellow stripe) connected directly to the back of the original deck that I'm not sure where it goes to, or what it is for (I thought it might be to power on the amp but I am getting output even with it disconnected). The new deck has a dedicated steering remote control cable (blue/yellow) separate from its general harness and which I'm not using as I do not have remote controls in the steering wheel. The new deck has a blue with white stripe wire in the harness that is labeled "Power Control Wire" but the new harness doesn't have a corresponding wire. Questions; Should I connect the blue/white wire in the new deck harness to the purple/yellow wire that was connected to the original deck? Is this necessary if I'm getting audio output with it disconnected?