vacouple, if your unit has the new touch screen with gps and ipod, you WILL have a remote. Your radio is powered from the coach batteries. When plugged in or running off generator, the battery voltage levels will either be charging or maintained depending on how "full" the batteries are. Once the battery control box reads the coach batteries as full, it then charges or trickle charges the chassis battery based on it's voltage level. If you have more specific questions as to the operation of the new stereo please feel free to pm me. I know it has many features and could be a bit overwhelming.