Ok I can’t get answers from Grand Design, Lippert, Dealer or anyone even emerg services I have a ( picture attached) a OBD 2 test module installed in my 2024 Grand design solitude. It’s wired in but no-one know why or what’s it’s for other than I already know it’s a diagnostic tool for newer automotive computers. It has a blue light on all the time plugged into a harness! By the way, Grand Design Tech support is been terrible, what happen to them ? Picture attached it’s a Veepeak OBD2 the QR just goes to there website, they were no help they said they dont support RV’s