New owner, have read many posts here about adding extra solar panels and will probably do the same to my new TAB320. BN What is not clear to me, with something like a suitcase package, is how you actually make the connection, and how it interacts with factory solar. Do you just connect directly to the battery? Is a controller needed? Do you need to modify something with the built in solar charging system? I've read a lot here but have not seen a direct answer yet to these questions. Thanks for any help!