The unit comes on with the ignition and it has a built in can bus decoder, the iPod function is good and displays all track info. The only down fall is once you select an album that's all you can play you can't navigate through all the iPod filters which is a shame but for the price it's well worth it. I use the Bluetooth and play music off my phone and then I can answer and make calls via the head unit, only downfall is it only displays the number and no name. Hope this helps and I'll post the link in a momento