I have a 1978 26ft Class A Georgie Boy Swinger Executive Lounge Motorhome on a Dodge 440 with appx 72,000 miles and the coach runs exceptionally well, looks flawless and very well kept. Just recently a mechanic was installing a new engine battery and inadvertently installed it backward, just long enough for there to be a buzzing sound before realizing what he had done. In that process there were a few things that got 'buzzed' but have since been rectified. There are two fusable links under the coach under the drivers area but underneath attached to what looks like the chassis rail. In this area are what looks like a million wires coming and going but these two fusable links are quite obvious and easily reachable. I am not in the slightest mechanically inclined so if I get something wrong or don't know what to call it forgive me, I'll try. These two fusable links are of strong wire with a fuse in the middle of each link. The one link, apparently had been attached to what makes the coach start or get juice to start. That was fried, it has since replaced and works like new. The other fusable link hasn't yet been replaced as at the time didn't think it needed to and now my auto step and front running lights are inop. In the beginning or right after the battery was installed incorrectly they worked fine, or at least seemed too, now they don't at all and these two items alone are what are causing me to miss out on these awesome days of weather here in Denver with using my coach. The auto step comes out too far and it's old school step so it's made out of steel and if I hit something with it, it'd be a mess. My question is, should I be looking at the remaining fuseable link first? It seems that the running lights and auto step should also be connected to whatever starts the coach or the area in which the other fusable link is located right? Any help would be greatly appreciated. Thanks!