And beware, some things may be hardwired to the battery with their own fuses.
My RV was so old it did not have a built-in propane leak detector. So I installed a combo propane/CO detector - hardwired to the house battery. It has its own fuse on the wires that run to it. So pulling fuses at the converter won't find that.
Likewise I installed a cigarette lighter outlet under the kitchen table with a USB adapter in it. This is also hardwired to the house battery again with its own fuse inline. The USB adapter has a little LED on it, so it is always drawing power.
