However zamp a competitor of rv solar panels does make an adapter from the furrion plug to their panels.
Furrion solar panel port.
Generally the only way to obtain this plug is when you buy a furrion solar panel.
Length of wire is 60 or 5 feet.
Any solar panel like the 2 5 watt solar battery charger ptw2997 you mentioned can be made compatible.
Using the furrion solar port.
Furrion is the maker of that solar port fspins bs.
The furrion solar port inlet is designed for use with the furrion 10a pwm solar charger and furrion portable solar panels briefcase and kickstand models.
They make proprietary solar panels that use this port.
Shrouded zamp solar plug protects the wire from accidental shorts.
The furrion solar port is a rare two pin port not found on most solar panels.
You can probably imagine why they would do this hint.