I have both a MiniBoostPRO and solar connected to my J35, but my JHub is only showing AUX input. How do I get it to show solar input as well?

You will need a BC300 and CommLink installed to be able to use both the AUX charging and solar charging together.

In order for the JHub tablet to see your solar input, the solar will need to be connected directly to the solar input on your J35 instead of your MiniBoostPRO.

If the solar is connected to your MiniBoostPRO, the BatteryPlus35-II is only seeing the AUX connection from the MiniBoostPRO and can't distinguish between the different charging sources.

https://teambmpro.com/products/bc300-commlink-external-shunt