Also be aware if your trailer has ELECTRIC BRAKES then you are required by DOT LAWS to have a working on-board battery in the event the trailer becomes disconnected and becomes a run-away trailer. The on-board battery is required to apply DC power for the electric brakes to stop the trailer.
Not having a working battery system on the trailer equipped with electric brakes when being pulled over state roads is breaking the law and might go against your insurance claim if you have property damage or worse if the run-away trailer causes the damages..
Check with your local DOT guys or STATE SAFETY INSPECTION places. Most states have a weight size requirement for the trailers to be equipped with brakes. Also most states have a required safety inspection as well...
Just saying...thanks for your help
Roy Ken