Lost my landing light completely

I have downloadad both the dimmed version of the landing light texture and the Xenon landing light texture and installed them independently of one another as their respective readme's suggested. Now I have no landing light at all. I have found the Xenon texture in my textures folder, but it does not show in the sim. I wanted to experiment to see which I liked better, but now have nothing at all. Any help would be appreciated. Hopefully there is a simple fix. The Xenon version comes with a backup of the original, but I have not tried to replace it yet.