I installed a program last 12 months. Flexible unit, taped it to the top (dbl stick 3M) ran the wires towards the charger box (comes along with the unit). The max output is 100 watts which just isn't quite a bit but for those who park in the sun for https://photovoltaic70010.loginblogin.com/42532373/a-simple-key-for-fabric-upholstery-unveiled