Solar panels based on watts needed.
How to wire soloar panels throught he roof.
Make the wire connections from the location of one array of solar panels to the next.
I use renogy panels rooftop entry point through the refrigerator vent or a combiner box disconnect switch.
To have a functional solar pv system you need to wire the panels together to create an electrical circuit through which current will flow and you also need to wire the panels to the inverter that will convert the dc power produced by the panels to ac power that can be used in your home and sent to the grid.
Securely attach a 6 gauge bare copper grounding wire to each inverter which will ground the entire system.
Set the solar panel onto the stanchions snap together the plug connections then screw the retaining clips to the rails to secure the panel.
Put the solar panels on top of your van where you d like them to be installed renogy solar panels installed on my van.
The installer ran the wires without properly sealing them.
I used 10 awg wire for between panels and controller i use 4 awg various crimp on eyes and wire connectors.