This morning I installed and wired the solar controller. I started by removing the panel above the driver's side back seat door and adding an additional electrical connection for the solar panel. Adding the connection allowed me to keep the factory power connection in that location as well.
I ran the wires down inside the c-pillar.
Under the back seat I installed a Victron MPPT 75/15 Solar Charge Controller with Bluetooth. I showed the mounting bracket I made for it in the previous post.
I wired the Victron to charge the main battery. The load output of the controller is connected to an outlet I installed in the load area to power my fridge/kitchen, it's the outlet just above the factory 12v outlet. It's an ARB socket with a screw-in collar to secure the plug to it can't work loose on a rough trail.b
The solar panel mounts on a slide under my rack basket but the rack basket isn't installed at the moment so for initial testing I just set the panel on the roof.
It's a very overcast day here today but the system is working - the panel is charging the battery. This screen of the Victron app shows that the panel is outputting about 18 1/2 volts and the battery has been charging for a little over 4 minutes and has added 0.10 volts. Since the battery voltage is fairly high already, the Victron is slowly charging it at this point.
This screen shows the voltage and current the charge controller is drawing from the solar panel and the batter voltage and current current going into the battery.
I've used this same solar panel for years with two of my Jeeps and it's got 100w/6a/24v output in full sun and easily keeps up with the power requirements of my fridge/kitchen in most sunny and cloudy situations.