Not a trailer modification per se, but I finally got around to using the parts I bought back in October to redo my power hookup at home. The old one was put in by my dad probably 15 years ago (I was in High School at the time). He took no care to "weatherproof" it and as the pictures will show, weather took its toll!
The old plug was exposed to the elements for those 15 years and was HIGHLY corroded and rusted. I could not even undo the screws, the heads just disintegrated. I had to drill out the middle one to open the plug housing.
Before picture shown here.
New housing should be completely weather proof and looks much better