Newbie , '89 Dodge Xplorer, no manual, help!

Thank you all! I located the home battery and fuse box ( this model the battery is under the passenger seat, fuse box is under the AC near back ). I had two bad fuses, now fixed. I have lights, refrigerator and flush power. All good things! Still trying to understand converter or inverter? I've been told I may have one or the other, but they do the same thing?
Now I need to tackle the propane system, water system and clean out. I am checking manual link now. This forum is a gem!