The original iPod's input line has been modified to RCA input. Using this, you can add an external input or RCA input as an iPod if the deck supports it. You can increase the number of connection destinations, such as IP bus CD changers and external RCA inputs. I used this to connect two AUX inputs to the DEH-P01. No claims and no returns. *The "junk" in the title was added for search purposes. The operation described above works perfectly.