Hi, I am new to this site and look forward to some help. I own a 2004 Fleetwood Tucson tent trailer. It has not been used for the last few years and I replaced the old battery, which was not taking a charge. A little knowledge is a dangerous thing. I remember my old electrical rule that white is positive and black is negative, so I hooked up the new battery this way. Nothing seemed to work. Later, I discovered that on my model, the black wire is positive, so I reversed them. Still nothing. (The 110v. does work). I found the reverse battery fuse by my converter and checked it, but the fuse was still good. I am now wondering whether leaving the battery connected incorrectly for a period of time may have damaged my converter. Any thoughts?