Sorry I confused you... my fault for not explaining it better. Perhaps this helps:
The problem with the battery minders requiring 120vac is that they need an extension cord connected to 120vac. So, every time you stop, you have plug in the extension cord to an 120v outlet and disconnect every time you have to travel.
The Trik-l-start doesn't need 120vac at all....the coach does. Plug in the coach and it automatically starts charging the house batter(s) from the converter/inverter/charger. Installation requires one wire to the chassis battery(s), one wire to the house battery(s), and one wire to ground....all three about #16 wire.
It is an install and forget device....not so with battery minders!
Ron
