Towed vehicle battery dead upon arrival at destination

[Pat O'Sullivan]

This summer we installed a Blue Ox tow package with a Stayinplay braking system. I own a 2007 Newmar Canyon Star 3303 which according to all info I have, it will keep the towed vehicle's battery charged while driving. Our first trip away resulted in a dead car battery when we arrived at the RV Resort which was embarassing and required a boost. This happens when I drive more than 4 hours without checking on the car during the trip. I checked for current at the plug in and got none. I spoke with the installer who said that it might be a blown fuse. Now I have to figure out which is the right fuse. Does anyone know exactly where the correct fuse box is located and which fuse it is?