Rv solar panel and basic electrical wiring

I have an RV that has a whole off grid electrical system complete with house batteries, an inverter, a smart charging wizard, and also solar panels. I need all of these wired up to the house batteries to have a complete system. I recently had a fire because of how I wired it, I guess I didn’t properly wire it/ have the proper fuses, etc. I just need someone who will wire it up neatly and efficiently. Someone with experience it should be a quick job.