Jensen Wall Mount Stereo issues

All, thanks for all the inputs, greatly appreciated. I was able to get in touch with a Jensen service technician this afternoon. He stated this is a common problem based on the way a camper manufacturer runs power to the unit. His suggestion was to place an in line on/off toggle switch within the red primary power wire. There is also a yellow wire that provides just enough power for the memory and clock. Eagle Cap has wired these two together so any influx of power allows the power to come on by itself. I do believe I will take the suggestion of some and just replace it with a better quality unit.