I am installing a switch panel with a horn, whip lights, interior light, winch, LED light, rear lights, wiper, dual USB, 12 volt plug and dual volt meter, I will install a extra battery with a battery isolator. I have a fused panel but would like to have the interior light, USB, rear light run off the battery with everything else off the key switch. Any suggestions how to do it? Do I need 2 fuse panels? 2 solenoids? Or keyed power then a switch to have power with key off? I am not good with electrical so dumb it down.