On this RV I installed (2) 160 watt panels into a junction box From there I used 8 AWG cable to a solar shut off switch and then to the Blue Sky SB3000i MPPT charge controller. From the controller the 8 AWG cable continues to a 40 Amp inline fuse and then the battery bank. I also used the Blue Sky battery temperature compensation cable.
(2) 160 Watt panels installed to roof junction box
Blue Sky SB3000i MPPT charge controller with battery temperature compensation
Charge controller location
Back of charge controller and solar shut off