To answer your question on panels
I have recentley completed a redo of my electrical on my H 26.5. What I found was, that for a very minimal price I could buy a switch panel with a low amperage buss, fuse holders and toggle switches. This is adequate for most low amperage, single battery systems.For an extra cost, I could buy a moderately priced switch panel, with water proof rocker switches, push-to-reset circuit breakers and a larger capacity buss bar.For an even higher cost, I could buy a DC circuit breaker panel system, with multiple buss bars, and toggle type circuit breakers. This is more apporpiate if you have switching at the helm station for lighting, but want to install circuit breaker protection at the distibution point.The reason for the buss bar is to eliminate a large group of individual hot(positive)wires from attaching at a single point to your positive battery cable or terminal. Instead, 1 larger guage wire is run to the panel from the battery or battery switch. This should be considered for the ground (negative) wires as well.Some very inexpensive panels do not have a buss at all. They simply come with factory made wire connections behind the panel. I would advise against the latter.As far as the advantage of circuit breakers over fuses, think about that old fuse panel in your grandpas house. If you are doing any rewiring or upgrading of electronics, it doesn't make sense to keep an antiquated or inadequate distribution panel. The cost of a $100.00 distibution panel might save you from a meltdown at sea. Besides, the ease of flipping a breaker to reset it compared to hunting down the correct amperage fuse on a dark night with a freighter bearing down on you and your running lights not working makes sense to me!SG on Grace - H26.5