So in preparation for accessories in the future I have started my relay box. So far I have it way over built with some extra steel I had around and installed all my components. I have made it removable so I still need to setup some waterproof plugs for the switch feeds and the outputs. I also still need to come up with a switch solution for inside. I was thinking of using the extra space under the single din radio I have since upgrading but have not found a switch that fits and I like.