All good suggestions that I will implement.
First question: Where can I get an assortment of these type of fuses? Even if I had trouble shooted the problem correctly, I would not have had the fuses. Do auto parts places carry these?
Another question. So, what is the 15 amp fuse under the front of the trailer near the battery? It's in a little case inline with the wiring coming from the battery.
My dealer did a pretty thorough PDI delivery walkthrough, and did show me the main fuse panel, but didn't share a lot of detail on what was in it. Or what would happen if I ever reversed the battery cables.