See also:

Trailer brakes
If your trailer is equipped with a braking system, make sure it conforms to federal and/or local regulations and that it is properly installed. Never connect a trailer brake system directly ...

Checking seat belt operation
Seat belt retractors are designed to lock seat belt movement by two separate methods: ● When the seat belt is pulled quickly from the retractor. ● When the vehicle slows down rapidly. ...

Maximum trailer loads
Never allow the total trailer load to exceed the value specified in the “Towing Load/Specification” chart. The total trailer load equals trailer weight plus its cargo weight. - When towing ...