This is a must-have for your RV because one day your RV engine battery will die from aux use when your parked without power, and you cannot start your RV. This will allow you to electronically jump your battery and stay inside the cab. You who are NOT DIY’ers, have someone do it for you and use this as a guide.
Also, there is a solution for your Jensen JRV212T that has an unresponsive touch screen.
Last, I ran audio outputs from the main TV to the Jensen JRV212T or the radio so you can hear the TV much clearer.