No apology necessary! Perfectly reasonable question. I am not an electrical engineer and one of the main reasons I did the video was to learn and understand myself. I studied a lot of other videos and wiring diagrams in order to come up with what I thought was the best and clearest explanation possible - at least for me. I would never have made thr video if I found one that answered all my questions.
There are some things that could be simplified, such as removing the positive and negative bus bars. It’s just a matter of making connections easier in the future versus having to pile multiple connections on battery posts. You don’t technically need the fuse box. But tying accessories directly to power is risky. The fuse is there to make sure no current over an expected amount is traveling through wires that can’t handle it and potentially catching fire.
You don’t have to wire up the voltmeter.
I think some of this is meant to learn and be fun, and if you are dreading it and are overwhelmed, then you have to figure out what you want to do. Maybe take the time to look at how others did theirs and see if anyone did it without an isolator or stinger relay. See if anyone did it without a fuse box. But each piece in my layout plays a part that all works together and allowed me to easily add numerous other accessories later.
You can do this and be successful if you decide you can. Give yourself some credit for getting this far. Then decide whether you want to go for it. It took me about a week. I still had to go to work and find time around my other obligations. But patience and persistence in the end made for a proud moment and I am very happy I stuck with it. I hope you will too.
And don’t forget we are here to help you.
