I’m planning to add extra deep cycle battery to my RV.
It will be charged by the alternator safely by an isolator. I’ll use national parks’s power outlets to charge it.
My main concern is the grounding points.
As the alternator that’s charging the main battery is grounded to the engine.
My auxiliary battery is grounded to the chassis. Same applies to the isolator & the load.
Should I connect the chassis ground point by ground cable to the engine bay grounding point to make it safer? The load will be 50 amps.
Or this setup I attached will be sufficient? Please tell me if what am doing is correct or not.