I noticed an old post that you commented on but nobody answered. I just bought a new 19BH and have a 100w renergy suitcase panel ready to use in spring through the side plug. I assumed my built in charge controller would control it. Now I’m not sure if I need a separate controller and if so would I need a negative or positive ground unit? I thought you may have sorted this by now and the old thread is closed so I couldn’t reply there.
Thanks
Ian