I have the same extra switch's and yes, they went no where. I used one of mine for the LED lighting too, but cant tell if there is an inline fuse or not (waiting for a fuse holder to come in the mail and will add it. I ended up adding some 12v led lights to the cup holders in the helm with an RF remote. Remote has a circular spin wheel to go through whatever color I want. I also added LED light rings behind the speakers so now I have LED behind the speakers and inside the cup holders. MUCH cheaper than having the boat built with it.
Anyone run new wiring under their deck? I ran some wiring but couldn't get it inside a plastic housing like factory. Is it going to just deteriorate fast and be useless, or will it be ok? TO me, the black housing the factory uses looks like a cosmetic housing and not a protector from the elements. Thoughts?