Purchased the male end connector for the factory installed Furion plug on ebay for 13.00. Sold by a company named Cnlinko in Jacksonville, FL. The part name and number are as follows, 2 Pin Power Connector Male Plug Waterproof, part # LP-20-C02PE-01-001. Hope this helps
B4 you start spending a lot of $$, check Harbor Freight. I use their panels on my Sprinter/Solera and Arctic Fox prior and it works perfectly to keep a slight trickle charge for the battery
Forget the plug use the gator clips. Less is more. I have used harbor freight panels for years. One still working on a saltwater sailboat almost ten years later. The new ones come with four panels a each with a stand and a controller for under $150.
There should have been a sticker on the side of the trailer saying which system it was to use. But if you invest in a Go Power unit it will come with all the adapters to fit any hook- up that was installed on the unit. It just depends if your willing to spend the cost for the solar panel i've seen them anywhere from 550.00-800.00 Dollars depending what wattage you want.