Was in the van the other week and all dark bar the stereo, I couldn't seen to turn it completely off. I held down the source button briefly and it flipped to tuner, then I held it down for a bit longer and it seems to go in to advertising mode. So it was still creating a lot of light so in the end I took the front off and went to sleep. Failing putting a switch in am I missing something obvious? As I write this I am thinking maybe I just should have waited longer...