After visually confirming that the fifth-wheel hitch in the bed of the truck is closed and locked around the trailer's kingpin, raise the trailer's front landing gear about an inch off the ground. Then start the truck, depress the brake pedal, put the transmission in drive, hold the trailer brake controller to lock up the trailer brakes, and release the truck’s brakes. The trailer brakes should keep the entire rig from moving forward. This test provides two key pieces of information: 1) The trailer is securely hitched to the tow vehicle. (If it isn’t, the truck will roll forward and the trailer will drop an inch to the ground on its landing gear instead of the bedsides and/or tailgate of your truck). 2) The trailer brakes are working as designed. (If they aren’t, the truck will pull the trailer forward during the test rather than the trailer remaining in place). For your safety and that of others around you, always perform this test, because... it is "Better to be safe than sorry”!

Option 1 if you have the know how and a multimeter... Option 2 if you don't have or know how to use a multimeter...

If you are going to be gone from your camper for an extended period of time, it is always wise to turn off either the spigot to the city water, and/or your water pump in the rig. Nobody wants to come home to a flooded RV because something malfunctioned while you were gone! Sometimes the simplest things make the biggest difference.