Just keep in mind that the vehicle end of the cable should be attached to the VEHICLE not to some part of the hitch or chains. Think of it in a worst case scenario, not just if the trailer comes off the ball. What if the vehicle hitch breaks. I replaced one of the screws in my license plate with a screw eye and fasten the vehicle end of the break away cable to it.
2014 Jayco Jay Flight 33RLDS travel trailer, 2005 Chevy 2500 Duramax diesel with 60 gallon auxilary bed mounted fuel tank, Honda EU3000 generator.