isn't rocket science. It's one of the things I like about living on a boat. It's all pretty simple and easy to do yourself.
Just invest in the proper tools(not the cheap
stuff), use quality heat shrink connectors, don't wear jewelry when working with 12v, wear eye protection if you're dealing with the battery
, always know the amp rating of the wire you're working with and put in place breakers/fuses as close as possible to the battery
that are rated less than the wire so they blow first.
You'll be surprised how much bad wiring
you'll run across in your boat. For some reason people love to save 50 cents by using those cheap
Walmart plastic connectors or just some black tape. And that's on wiring that should have a 10-20 year lifespan on your boat.
This is what I yanked out when I was replacing the lights on my boat:
It wasn't any extra effort to clean it up with the new install:
The boat itself has great wiring in it. Just a lot of shoddy add on work.