Thanks everyone. I checked the batteries and they are correctly hooked up at this point. We bought the trailer yesterday from the previous owner, so he may have reversed them at some point and didn't realize the converter fuses were blown. I put new fuses in and everything is working good now, I just wanted to know kind of what else might have caused it so I knew where to look if they blew again.
Roy, i'm not sure if this one has a smart converter or not. My old 2003 did, but I have not read all the manuals yet to see if the 2009 does or not.
