Clearance lights on at the campground

I actually made a plug-in module that I can just plug into the trailer's umbilical. It also has a switch so the I can have them on steady or flip the switch and they blink. That being said, I only use them in the event of an emergency. If I have to unhook from the 5er and leave it on the side of the road I can plug the module in and set them to flash as an additional hazard warning (I also have LED "flares" to mark off the trailer). If, heaven forbid, I should ever have to call the EMTs to the campsite, I can use the module to light the trailer up to make it easier to find. Unfortunately, with folks that seem to think that having them on for the heck of it, it will prove less useful for the EMT locator function. If I were "king", and fortunately I'm not, I'd make having those lights on in a campground as a sign that there is some emergency going on that needed attention. I have a module I built, but, only for emergency use as, I, too, am one of those that prefer minimal lighting; don't get me started on those folks that turn on their scare lights and leave them on all night...