It's not necessarily as simple as buying a cord with two male ends.
Palomino, for example, uses a different wiring scheme on the camper-side plug. I had to spend a couple hours with a 12V battery pack and some probes to figure out which pin went to which light on mine.
There is absolutely nothing wrong with the "screw on" plug ends. They are very well designed to keep the weather out.
If you're paranoid, just take the umbilical off and put it in the cab of the truck while the rig is parked for long term.