I run two of
These panels on my WC840. for 200w total.
I am also an electronics geek so I went with the Bogart Engineering TM-2030 battery system monitor and there matching solar controller.
This picture shows the solar panels putting out 11.6 amps.
This is the charge controller (under sink)
Here is the shunt, two 27 series AGM's and that round thing is the disconnect switch I added.
you can also go with charge controller from the same source as solar panels.
one thing I can recommend is go through your solar wiring. I probably removed an extra 10' of wire from mine when I built it.
Mine has been working for around 1.5 years now. when sitting in the driveway at home, refrigerator running on propane all summer, I never have to plug it RV. in winter, I turn off disconnect switch but solar is still connected to charge, and I even get enough light through my RV cover to keep the AGM's topped off all winter.
The connector WC put on the roof of mine is called SAE.