I've read through a number of posts but am still not clear on what to do in my circumstance. I am building out a composite flatbed camper with the only metal structure being an under floor aluminum subframe and external aluminum trim all the way around the composite panels. I am using all Victron equipment with BattleBorn LiFePO4 batteries. DC-DC charger is the isolated version. Everything else is as you would expect (3K inverter, solar on the roof, shore power, no generator, etc.). My only remaining uncertainty on installation is if I need to tie the camper electrical ground back to the truck chassis ground. My gut tells me no, since the camper electrical system truly is isolated from the truck electrical (I'm using the isolated DC-DC charger). I'm also not certain if I need to find a way to tie the camper ground to the aluminum subframe & trim. If I do ground to the aluminum subframe and trim there is a good likelihood that it will at some point make contact to the truck chassis. Any insight you can offer would be very appreciated!
TIA!
