On this RV I installed (1) 160 Watt panel to a junction box where I also wired an existing 60 watt panel into the new system. Using 6 AWG cable from the junction box I installed a solar shut off and then a Blue Sky 3024iL MPPT charge controller. With the controller I installed a Blue Sky IPN Pro remote and battery meter with shunt. Of course I also installed the Blue Sky battery temperature compensation cable.
Also, the customer had me wire an external plug to the charge controller for him to plug his portable 120 watt panel into.